diff options
Diffstat (limited to 'src/modules/fw_pos_control_l1')
| -rw-r--r-- | src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp | 416 | ||||
| -rw-r--r-- | src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c | 22 | ||||
| -rw-r--r-- | src/modules/fw_pos_control_l1/landingslope.cpp | 50 | ||||
| -rw-r--r-- | src/modules/fw_pos_control_l1/landingslope.h | 39 | ||||
| -rw-r--r-- | src/modules/fw_pos_control_l1/module.mk | 5 | ||||
| -rw-r--r-- | src/modules/fw_pos_control_l1/mtecs/limitoverride.cpp | 71 | ||||
| -rw-r--r-- | src/modules/fw_pos_control_l1/mtecs/limitoverride.h | 107 | ||||
| -rw-r--r-- | src/modules/fw_pos_control_l1/mtecs/mTecs.cpp | 313 | ||||
| -rw-r--r-- | src/modules/fw_pos_control_l1/mtecs/mTecs.h | 155 | ||||
| -rw-r--r-- | src/modules/fw_pos_control_l1/mtecs/mTecs_blocks.h | 220 | ||||
| -rw-r--r-- | src/modules/fw_pos_control_l1/mtecs/mTecs_params.c | 419 |
11 files changed, 1631 insertions, 186 deletions
diff --git a/src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp b/src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp index 7f13df785..000c02e3d 100644 --- a/src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp +++ b/src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp @@ -43,8 +43,8 @@ * Proceedings of the AIAA Guidance, Navigation and Control * Conference, Aug 2004. AIAA-2004-4900. * - * Original implementation for total energy control class: - * Paul Riseborough and Andrew Tridgell, 2013 (code in lib/external_lgpl) + * Implementation for total energy control class: + * Thomas Gubler * * More details and acknowledgements in the referenced library headers. * @@ -88,8 +88,9 @@ #include <mavlink/mavlink_log.h> #include <launchdetection/LaunchDetector.h> #include <ecl/l1/ecl_l1_pos_controller.h> -#include <external_lgpl/tecs/tecs.h> +#include <drivers/drv_range_finder.h> #include "landingslope.h" +#include "mtecs/mTecs.h" /** @@ -134,6 +135,7 @@ private: int _params_sub; /**< notification of parameter updates */ int _manual_control_sub; /**< notification of manual control updates */ int _sensor_combined_sub; /**< for body frame accelerations */ + int _range_finder_sub; /**< range finder subscription */ orb_advert_t _attitude_sp_pub; /**< attitude setpoint */ orb_advert_t _nav_capabilities_pub; /**< navigation capabilities publication */ @@ -147,13 +149,12 @@ private: struct vehicle_global_position_s _global_pos; /**< global vehicle position */ struct position_setpoint_triplet_s _pos_sp_triplet; /**< triplet of mission items */ struct sensor_combined_s _sensor_combined; /**< for body frame accelerations */ + struct range_finder_report _range_finder; /**< range finder report */ perf_counter_t _loop_perf; /**< loop performance counter */ - bool _setpoint_valid; /**< flag if the position control setpoint is valid */ - /** manual control states */ - float _seatbelt_hold_heading; /**< heading the system should hold in seatbelt mode */ + float _altctrl_hold_heading; /**< heading the system should hold in altctrl mode */ double _loiter_hold_lat; double _loiter_hold_lon; float _loiter_hold_alt; @@ -181,7 +182,7 @@ private: /* Landingslope object */ Landingslope landingslope; - float flare_curve_alt_last; + float flare_curve_alt_rel_last; /* heading hold */ float target_bearing; @@ -197,7 +198,8 @@ private: math::Matrix<3, 3> _R_nb; ///< current attitude ECL_L1_Pos_Controller _l1_control; - TECS _tecs; + fwPosctrl::mTecs _mTecs; + bool _was_pos_control_mode; struct { float l1_period; @@ -229,8 +231,6 @@ private: float throttle_land_max; - float loiter_hold_radius; - float heightrate_p; float speedrate_p; @@ -239,6 +239,7 @@ private: float land_flare_alt_relative; float land_thrust_lim_alt_relative; float land_heading_hold_horizontal_distance; + float range_finder_rel_alt; } _parameters; /**< local copies of interesting parameters */ @@ -273,8 +274,6 @@ private: param_t throttle_land_max; - param_t loiter_hold_radius; - param_t heightrate_p; param_t speedrate_p; @@ -283,6 +282,7 @@ private: param_t land_flare_alt_relative; param_t land_thrust_lim_alt_relative; param_t land_heading_hold_horizontal_distance; + param_t range_finder_rel_alt; } _parameter_handles; /**< handles for interesting parameters */ @@ -309,6 +309,12 @@ private: bool vehicle_airspeed_poll(); /** + * Check for range finder updates. + */ + bool range_finder_poll(); + + + /** * Check for position updates. */ void vehicle_attitude_poll(); @@ -329,13 +335,18 @@ private: void navigation_capabilities_publish(); /** + * Get the relative alt either from the difference between estimate and waypoint or from the laser range finder + */ + float get_relative_landingalt(float land_setpoint_alt, float current_alt, const struct range_finder_report &range_finder, float range_finder_use_relative_alt); + + /** * Control position. */ - bool control_position(const math::Vector<2> &global_pos, const math::Vector<2> &ground_speed, + bool control_position(const math::Vector<2> &global_pos, const math::Vector<3> &ground_speed, const struct position_setpoint_triplet_s &_pos_sp_triplet); float calculate_target_airspeed(float airspeed_demand); - void calculate_gndspeed_undershoot(const math::Vector<2> ¤t_position, const math::Vector<2> &ground_speed, const struct position_setpoint_triplet_s &pos_sp_triplet); + void calculate_gndspeed_undershoot(const math::Vector<2> ¤t_position, const math::Vector<2> &ground_speed_2d, const struct position_setpoint_triplet_s &pos_sp_triplet); /** * Shim for calling task_main from task_create. @@ -345,7 +356,7 @@ private: /** * Main sensor collection task. */ - void task_main() __attribute__((noreturn)); + void task_main(); /* * Reset takeoff state @@ -356,6 +367,19 @@ private: * Reset landing state */ void reset_landing_state(); + + /* + * Call TECS : a wrapper function to call one of the TECS implementations (mTECS is called only if enabled via parameter) + * XXX need to clean up/remove this function once mtecs fully replaces TECS + */ + void tecs_update_pitch_throttle(float alt_sp, float v_sp, float eas2tas, + float pitch_min_rad, float pitch_max_rad, + float throttle_min, float throttle_max, float throttle_cruise, + bool climbout_mode, float climbout_pitch_min_rad, + float altitude, + const math::Vector<3> &ground_speed, + tecs_mode mode = TECS_MODE_NORMAL); + }; namespace l1_control @@ -384,6 +408,7 @@ FixedwingPositionControl::FixedwingPositionControl() : _control_mode_sub(-1), _params_sub(-1), _manual_control_sub(-1), + _range_finder_sub(-1), /* publications */ _attitude_sp_pub(-1), @@ -393,7 +418,6 @@ FixedwingPositionControl::FixedwingPositionControl() : _loop_perf(perf_alloc(PC_ELAPSED, "fw l1 control")), /* states */ - _setpoint_valid(false), _loiter_hold(false), land_noreturn_horizontal(false), land_noreturn_vertical(false), @@ -401,9 +425,9 @@ FixedwingPositionControl::FixedwingPositionControl() : land_motor_lim(false), land_onslope(false), launch_detected(false), - last_manual(false), usePreTakeoffThrust(false), - flare_curve_alt_last(0.0f), + last_manual(false), + flare_curve_alt_rel_last(0.0f), launchDetector(), _airspeed_error(0.0f), _airspeed_valid(false), @@ -417,13 +441,15 @@ FixedwingPositionControl::FixedwingPositionControl() : _control_mode(), _global_pos(), _pos_sp_triplet(), - _sensor_combined() + _sensor_combined(), + _mTecs(), + _was_pos_control_mode(false), + _range_finder() { _nav_capabilities.turn_distance = 0.0f; _parameter_handles.l1_period = param_find("FW_L1_PERIOD"); _parameter_handles.l1_damping = param_find("FW_L1_DAMPING"); - _parameter_handles.loiter_hold_radius = param_find("FW_LOITER_R"); _parameter_handles.airspeed_min = param_find("FW_AIRSPD_MIN"); _parameter_handles.airspeed_trim = param_find("FW_AIRSPD_TRIM"); @@ -442,6 +468,7 @@ FixedwingPositionControl::FixedwingPositionControl() : _parameter_handles.land_flare_alt_relative = param_find("FW_LND_FLALT"); _parameter_handles.land_thrust_lim_alt_relative = param_find("FW_LND_TLALT"); _parameter_handles.land_heading_hold_horizontal_distance = param_find("FW_LND_HHDIST"); + _parameter_handles.range_finder_rel_alt = param_find("FW_LND_RFRALT"); _parameter_handles.time_const = param_find("FW_T_TIME_CONST"); _parameter_handles.min_sink_rate = param_find("FW_T_SINK_MIN"); @@ -494,7 +521,6 @@ FixedwingPositionControl::parameters_update() /* L1 control parameters */ param_get(_parameter_handles.l1_damping, &(_parameters.l1_damping)); param_get(_parameter_handles.l1_period, &(_parameters.l1_period)); - param_get(_parameter_handles.loiter_hold_radius, &(_parameters.loiter_hold_radius)); param_get(_parameter_handles.airspeed_min, &(_parameters.airspeed_min)); param_get(_parameter_handles.airspeed_trim, &(_parameters.airspeed_trim)); @@ -531,27 +557,12 @@ FixedwingPositionControl::parameters_update() param_get(_parameter_handles.land_thrust_lim_alt_relative, &(_parameters.land_thrust_lim_alt_relative)); param_get(_parameter_handles.land_heading_hold_horizontal_distance, &(_parameters.land_heading_hold_horizontal_distance)); + param_get(_parameter_handles.range_finder_rel_alt, &(_parameters.range_finder_rel_alt)); + _l1_control.set_l1_damping(_parameters.l1_damping); _l1_control.set_l1_period(_parameters.l1_period); _l1_control.set_l1_roll_limit(math::radians(_parameters.roll_limit)); - _tecs.set_time_const(_parameters.time_const); - _tecs.set_min_sink_rate(_parameters.min_sink_rate); - _tecs.set_max_sink_rate(_parameters.max_sink_rate); - _tecs.set_throttle_damp(_parameters.throttle_damp); - _tecs.set_integrator_gain(_parameters.integrator_gain); - _tecs.set_vertical_accel_limit(_parameters.vertical_accel_limit); - _tecs.set_height_comp_filter_omega(_parameters.height_comp_filter_omega); - _tecs.set_speed_comp_filter_omega(_parameters.speed_comp_filter_omega); - _tecs.set_roll_throttle_compensation(_parameters.roll_throttle_compensation); - _tecs.set_speed_weight(_parameters.speed_weight); - _tecs.set_pitch_damping(_parameters.pitch_damping); - _tecs.set_indicated_airspeed_min(_parameters.airspeed_min); - _tecs.set_indicated_airspeed_max(_parameters.airspeed_max); - _tecs.set_max_climb_rate(_parameters.max_climb_rate); - _tecs.set_heightrate_p(_parameters.heightrate_p); - _tecs.set_speedrate_p(_parameters.speedrate_p); - /* sanity check parameters */ if (_parameters.airspeed_max < _parameters.airspeed_min || _parameters.airspeed_max < 5.0f || @@ -574,6 +585,9 @@ FixedwingPositionControl::parameters_update() /* Update Launch Detector Parameters */ launchDetector.updateParams(); + /* Update the mTecs */ + _mTecs.updateParams(); + return OK; } @@ -620,12 +634,23 @@ FixedwingPositionControl::vehicle_airspeed_poll() } } - /* update TECS state */ - _tecs.enable_airspeed(_airspeed_valid); - return airspeed_updated; } +bool +FixedwingPositionControl::range_finder_poll() +{ + /* check if there is a range finder measurement */ + bool range_finder_updated; + orb_check(_range_finder_sub, &range_finder_updated); + + if (range_finder_updated) { + orb_copy(ORB_ID(sensor_range_finder), _range_finder_sub, &_range_finder); + } + + return range_finder_updated; +} + void FixedwingPositionControl::vehicle_attitude_poll() { @@ -663,7 +688,6 @@ FixedwingPositionControl::vehicle_setpoint_poll() if (pos_sp_triplet_updated) { orb_copy(ORB_ID(position_setpoint_triplet), _pos_sp_triplet_sub, &_pos_sp_triplet); - _setpoint_valid = true; } } @@ -705,15 +729,15 @@ FixedwingPositionControl::calculate_target_airspeed(float airspeed_demand) } void -FixedwingPositionControl::calculate_gndspeed_undershoot(const math::Vector<2> ¤t_position, const math::Vector<2> &ground_speed, const struct position_setpoint_triplet_s &pos_sp_triplet) +FixedwingPositionControl::calculate_gndspeed_undershoot(const math::Vector<2> ¤t_position, const math::Vector<2> &ground_speed_2d, const struct position_setpoint_triplet_s &pos_sp_triplet) { - if (_global_pos_valid && !(pos_sp_triplet.current.type == SETPOINT_TYPE_LOITER)) { + if (pos_sp_triplet.current.valid && !(pos_sp_triplet.current.type == SETPOINT_TYPE_LOITER)) { /* rotate ground speed vector with current attitude */ math::Vector<2> yaw_vector(_R_nb(0, 0), _R_nb(1, 0)); yaw_vector.normalize(); - float ground_speed_body = yaw_vector * ground_speed; + float ground_speed_body = yaw_vector * ground_speed_2d; /* The minimum desired ground speed is the minimum airspeed projected on to the ground using the altitude and horizontal difference between the waypoints if available*/ float distance = 0.0f; @@ -754,13 +778,31 @@ void FixedwingPositionControl::navigation_capabilities_publish() } } +float FixedwingPositionControl::get_relative_landingalt(float land_setpoint_alt, float current_alt, const struct range_finder_report &range_finder, float range_finder_use_relative_alt) +{ + float rel_alt_estimated = current_alt - land_setpoint_alt; + + /* only use range finder if: + * parameter (range_finder_use_relative_alt) > 0 + * the measurement is valid + * the estimated relative altitude (from global altitude estimate and landing waypoint) <= range_finder_use_relative_alt + */ + if (range_finder_use_relative_alt < 0 || !range_finder.valid || rel_alt_estimated > range_finder_use_relative_alt ) { + return rel_alt_estimated; + } + + return range_finder.distance; + +} + bool -FixedwingPositionControl::control_position(const math::Vector<2> ¤t_position, const math::Vector<2> &ground_speed, +FixedwingPositionControl::control_position(const math::Vector<2> ¤t_position, const math::Vector<3> &ground_speed, const struct position_setpoint_triplet_s &pos_sp_triplet) { bool setpoint = true; - calculate_gndspeed_undershoot(current_position, ground_speed, pos_sp_triplet); + math::Vector<2> ground_speed_2d = {ground_speed(0), ground_speed(1)}; + calculate_gndspeed_undershoot(current_position, ground_speed_2d, pos_sp_triplet); float eas2tas = 1.0f; // XXX calculate actual number based on current measurements @@ -771,7 +813,6 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi math::Vector<3> accel_body(_sensor_combined.accelerometer_m_s2); math::Vector<3> accel_earth = _R_nb * accel_body; - _tecs.update_50hz(baro_altitude, _airspeed.indicated_airspeed_m_s, _R_nb, accel_body, accel_earth); float altitude_error = _pos_sp_triplet.current.alt - _global_pos.alt; /* no throttle limit as default */ @@ -781,20 +822,31 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi // XXX this should only execute if auto AND safety off (actuators active), // else integrators should be constantly reset. - if (_control_mode.flag_control_position_enabled) { + if (pos_sp_triplet.current.valid) { + + if (!_was_pos_control_mode) { + /* reset integrators */ + if (_mTecs.getEnabled()) { + _mTecs.resetIntegrators(); + _mTecs.resetDerivatives(_airspeed.true_airspeed_m_s); + } + } + + _was_pos_control_mode = true; /* get circle mode */ bool was_circle_mode = _l1_control.circle_mode(); - /* restore speed weight, in case changed intermittently (e.g. in landing handling) */ - _tecs.set_speed_weight(_parameters.speed_weight); - /* current waypoint (the one currently heading for) */ math::Vector<2> next_wp((float)pos_sp_triplet.current.lat, (float)pos_sp_triplet.current.lon); /* current waypoint (the one currently heading for) */ math::Vector<2> curr_wp((float)pos_sp_triplet.current.lat, (float)pos_sp_triplet.current.lon); + /* Initialize attitude controller integrator reset flags to 0 */ + _att_sp.roll_reset_integral = false; + _att_sp.pitch_reset_integral = false; + _att_sp.yaw_reset_integral = false; /* previous waypoint */ math::Vector<2> prev_wp; @@ -813,31 +865,29 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi } - if (pos_sp_triplet.current.type == SETPOINT_TYPE_NORMAL) { + if (pos_sp_triplet.current.type == SETPOINT_TYPE_POSITION) { /* waypoint is a plain navigation waypoint */ - _l1_control.navigate_waypoints(prev_wp, curr_wp, current_position, ground_speed); + _l1_control.navigate_waypoints(prev_wp, curr_wp, current_position, ground_speed_2d); _att_sp.roll_body = _l1_control.nav_roll(); _att_sp.yaw_body = _l1_control.nav_bearing(); - _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, _pos_sp_triplet.current.alt, calculate_target_airspeed(_parameters.airspeed_trim), - _airspeed.indicated_airspeed_m_s, eas2tas, - false, math::radians(_parameters.pitch_limit_min), - _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, - math::radians(_parameters.pitch_limit_min), math::radians(_parameters.pitch_limit_max)); + tecs_update_pitch_throttle(_pos_sp_triplet.current.alt, calculate_target_airspeed(_parameters.airspeed_trim), eas2tas, + math::radians(_parameters.pitch_limit_min), math::radians(_parameters.pitch_limit_max), + _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, + false, math::radians(_parameters.pitch_limit_min), _global_pos.alt, ground_speed); } else if (pos_sp_triplet.current.type == SETPOINT_TYPE_LOITER) { /* waypoint is a loiter waypoint */ _l1_control.navigate_loiter(curr_wp, current_position, pos_sp_triplet.current.loiter_radius, - pos_sp_triplet.current.loiter_direction, ground_speed); + pos_sp_triplet.current.loiter_direction, ground_speed_2d); _att_sp.roll_body = _l1_control.nav_roll(); _att_sp.yaw_body = _l1_control.nav_bearing(); - _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, _pos_sp_triplet.current.alt, calculate_target_airspeed(_parameters.airspeed_trim), - _airspeed.indicated_airspeed_m_s, eas2tas, - false, math::radians(_parameters.pitch_limit_min), - _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, - math::radians(_parameters.pitch_limit_min), math::radians(_parameters.pitch_limit_max)); + tecs_update_pitch_throttle(_pos_sp_triplet.current.alt, calculate_target_airspeed(_parameters.airspeed_trim), eas2tas, + math::radians(_parameters.pitch_limit_min), math::radians(_parameters.pitch_limit_max), + _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, + false, math::radians(_parameters.pitch_limit_min), _global_pos.alt, ground_speed); } else if (pos_sp_triplet.current.type == SETPOINT_TYPE_LAND) { @@ -862,7 +912,7 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi // warnx("NORET: %d, target_bearing: %d, yaw: %d", (int)land_noreturn_horizontal, (int)math::degrees(target_bearing), (int)math::degrees(_att.yaw)); - _l1_control.navigate_heading(target_bearing, _att.yaw, ground_speed); + _l1_control.navigate_heading(target_bearing, _att.yaw, ground_speed_2d); /* limit roll motion to prevent wings from touching the ground first */ _att_sp.roll_body = math::constrain(_att_sp.roll_body, math::radians(-10.0f), math::radians(10.0f)); @@ -872,7 +922,7 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi } else { /* normal navigation */ - _l1_control.navigate_waypoints(prev_wp, curr_wp, current_position, ground_speed); + _l1_control.navigate_waypoints(prev_wp, curr_wp, current_position, ground_speed_2d); } _att_sp.roll_body = _l1_control.nav_roll(); @@ -896,12 +946,14 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi /* Calculate distance (to landing waypoint) and altitude of last ordinary waypoint L */ float L_wp_distance = get_distance_to_next_waypoint(prev_wp(0), prev_wp(1), curr_wp(0), curr_wp(1)); - float L_altitude = landingslope.getLandingSlopeAbsoluteAltitude(L_wp_distance, _pos_sp_triplet.current.alt); + float L_altitude_rel = _pos_sp_triplet.previous.valid ? _pos_sp_triplet.previous.alt - _pos_sp_triplet.current.alt : 0.0f; float bearing_airplane_currwp = get_bearing_to_next_waypoint(current_position(0), current_position(1), curr_wp(0), curr_wp(1)); - float landing_slope_alt_desired = landingslope.getLandingSlopeAbsoluteAltitudeSave(wp_distance, bearing_lastwp_currwp, bearing_airplane_currwp, _pos_sp_triplet.current.alt); + float landing_slope_alt_rel_desired = landingslope.getLandingSlopeRelativeAltitudeSave(wp_distance, bearing_lastwp_currwp, bearing_airplane_currwp); - if ( (_global_pos.alt < _pos_sp_triplet.current.alt + landingslope.flare_relative_alt()) || land_noreturn_vertical) { //checking for land_noreturn to avoid unwanted climb out + float relative_alt = get_relative_landingalt(_pos_sp_triplet.current.alt, _global_pos.alt, _range_finder, _parameters.range_finder_rel_alt); + + if ( (relative_alt < landingslope.flare_relative_alt()) || land_noreturn_vertical) { //checking for land_noreturn to avoid unwanted climb out /* land with minimal speed */ @@ -911,7 +963,7 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi /* kill the throttle if param requests it */ throttle_max = _parameters.throttle_max; - if (_global_pos.alt < _pos_sp_triplet.current.alt + landingslope.motor_lim_relative_alt() || land_motor_lim) { + if (relative_alt < landingslope.motor_lim_relative_alt() || land_motor_lim) { throttle_max = math::min(throttle_max, _parameters.throttle_land_max); if (!land_motor_lim) { land_motor_lim = true; @@ -920,20 +972,22 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi } - float flare_curve_alt = landingslope.getFlareCurveAltitudeSave(wp_distance, bearing_lastwp_currwp, bearing_airplane_currwp, _pos_sp_triplet.current.alt); + float flare_curve_alt_rel = landingslope.getFlareCurveRelativeAltitudeSave(wp_distance, bearing_lastwp_currwp, bearing_airplane_currwp); /* avoid climbout */ - if ((flare_curve_alt_last < flare_curve_alt && land_noreturn_vertical) || land_stayonground) + if ((flare_curve_alt_rel_last < flare_curve_alt_rel && land_noreturn_vertical) || land_stayonground) { - flare_curve_alt = pos_sp_triplet.current.alt; + flare_curve_alt_rel = 0.0f; // stay on ground land_stayonground = true; } - _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, flare_curve_alt, calculate_target_airspeed(airspeed_land), - _airspeed.indicated_airspeed_m_s, eas2tas, - false, flare_pitch_angle_rad, - 0.0f, throttle_max, throttle_land, - flare_pitch_angle_rad, math::radians(15.0f)); + tecs_update_pitch_throttle(_pos_sp_triplet.current.alt + flare_curve_alt_rel, + calculate_target_airspeed(airspeed_land), eas2tas, + flare_pitch_angle_rad, math::radians(15.0f), + 0.0f, throttle_max, throttle_land, + false, flare_pitch_angle_rad, + _pos_sp_triplet.current.alt + relative_alt, ground_speed, + land_motor_lim ? TECS_MODE_LAND_THROTTLELIM : TECS_MODE_LAND); if (!land_noreturn_vertical) { mavlink_log_info(_mavlink_fd, "#audio: Landing, flaring"); @@ -941,46 +995,62 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi } //warnx("Landing: flare, _global_pos.alt %.1f, flare_curve_alt %.1f, flare_curve_alt_last %.1f, flare_length %.1f, wp_distance %.1f", _global_pos.alt, flare_curve_alt, flare_curve_alt_last, flare_length, wp_distance); - flare_curve_alt_last = flare_curve_alt; + flare_curve_alt_rel_last = flare_curve_alt_rel; } else { /* intersect glide slope: * minimize speed to approach speed - * if current position is higher or within 10m of slope follow the glide slope - * if current position is below slope -10m continue on maximum of previous wp altitude or L_altitude until the intersection with the slope + * if current position is higher than the slope follow the glide slope (sink to the + * glide slope) + * also if the system captures the slope it should stay + * on the slope (bool land_onslope) + * if current position is below the slope continue at previous wp altitude + * until the intersection with slope * */ - float altitude_desired = _global_pos.alt; - if (_global_pos.alt > landing_slope_alt_desired - 10.0f) { + float altitude_desired_rel = relative_alt; + if (relative_alt > landing_slope_alt_rel_desired || land_onslope) { /* stay on slope */ - altitude_desired = landing_slope_alt_desired; + altitude_desired_rel = landing_slope_alt_rel_desired; if (!land_onslope) { mavlink_log_info(_mavlink_fd, "#audio: Landing, on slope"); land_onslope = true; } } else { /* continue horizontally */ - altitude_desired = math::max(_global_pos.alt, L_altitude); + altitude_desired_rel = _pos_sp_triplet.previous.valid ? L_altitude_rel : relative_alt; } - _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, altitude_desired, calculate_target_airspeed(airspeed_approach), - _airspeed.indicated_airspeed_m_s, eas2tas, - false, math::radians(_parameters.pitch_limit_min), - _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, - math::radians(_parameters.pitch_limit_min), math::radians(_parameters.pitch_limit_max)); + tecs_update_pitch_throttle(_pos_sp_triplet.current.alt + altitude_desired_rel, + calculate_target_airspeed(airspeed_approach), eas2tas, + math::radians(_parameters.pitch_limit_min), + math::radians(_parameters.pitch_limit_max), + _parameters.throttle_min, + _parameters.throttle_max, + _parameters.throttle_cruise, + false, + math::radians(_parameters.pitch_limit_min), + _pos_sp_triplet.current.alt + relative_alt, + ground_speed); } } else if (pos_sp_triplet.current.type == SETPOINT_TYPE_TAKEOFF) { /* Perform launch detection */ -// warnx("Launch detection running"); if(!launch_detected) { //do not do further checks once a launch was detected if (launchDetector.launchDetectionEnabled()) { static hrt_abstime last_sent = 0; if(hrt_absolute_time() - last_sent > 4e6) { -// warnx("Launch detection running"); mavlink_log_info(_mavlink_fd, "#audio: Launchdetection running"); last_sent = hrt_absolute_time(); } + + /* Tell the attitude controller to stop integrating while we are waiting + * for the launch */ + _att_sp.roll_reset_integral = true; + _att_sp.pitch_reset_integral = true; + _att_sp.yaw_reset_integral = true; + + /* Detect launch */ launchDetector.update(_sensor_combined.accelerometer_m_s2[0]); if (launchDetector.getLaunchDetected()) { launch_detected = true; @@ -993,7 +1063,7 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi } } - _l1_control.navigate_waypoints(prev_wp, curr_wp, current_position, ground_speed); + _l1_control.navigate_waypoints(prev_wp, curr_wp, current_position, ground_speed_2d); _att_sp.roll_body = _l1_control.nav_roll(); _att_sp.yaw_body = _l1_control.nav_bearing(); @@ -1004,22 +1074,36 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi if (altitude_error > 15.0f) { /* enforce a minimum of 10 degrees pitch up on takeoff, or take parameter */ - _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, _pos_sp_triplet.current.alt, calculate_target_airspeed(1.3f * _parameters.airspeed_min), - _airspeed.indicated_airspeed_m_s, eas2tas, - true, math::max(math::radians(pos_sp_triplet.current.pitch_min), math::radians(10.0f)), - _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, - math::radians(_parameters.pitch_limit_min), math::radians(_parameters.pitch_limit_max)); + tecs_update_pitch_throttle(_pos_sp_triplet.current.alt, + calculate_target_airspeed(1.3f * _parameters.airspeed_min), + eas2tas, + math::radians(_parameters.pitch_limit_min), + math::radians(_parameters.pitch_limit_max), + _parameters.throttle_min, _parameters.throttle_max, + _parameters.throttle_cruise, + true, + math::max(math::radians(pos_sp_triplet.current.pitch_min), + math::radians(10.0f)), + _global_pos.alt, + ground_speed, + TECS_MODE_TAKEOFF); /* limit roll motion to ensure enough lift */ _att_sp.roll_body = math::constrain(_att_sp.roll_body, math::radians(-15.0f), math::radians(15.0f)); } else { - - _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, _pos_sp_triplet.current.alt, calculate_target_airspeed(_parameters.airspeed_trim), - _airspeed.indicated_airspeed_m_s, eas2tas, - false, math::radians(_parameters.pitch_limit_min), - _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, - math::radians(_parameters.pitch_limit_min), math::radians(_parameters.pitch_limit_max)); + tecs_update_pitch_throttle(_pos_sp_triplet.current.alt, + calculate_target_airspeed(_parameters.airspeed_trim), + eas2tas, + math::radians(_parameters.pitch_limit_min), + math::radians(_parameters.pitch_limit_max), + _parameters.throttle_min, + _parameters.throttle_max, + _parameters.throttle_cruise, + false, + math::radians(_parameters.pitch_limit_min), + _global_pos.alt, + ground_speed); } } else { @@ -1051,21 +1135,23 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi _att_sp.roll_reset_integral = true; } - } else if (0/* easy mode enabled */) { + } else if (0/* posctrl mode enabled */) { - /** EASY FLIGHT **/ + _was_pos_control_mode = false; - if (0/* switched from another mode to easy */) { - _seatbelt_hold_heading = _att.yaw; - } + /** POSCTRL FLIGHT **/ - if (0/* easy on and manual control yaw non-zero */) { - _seatbelt_hold_heading = _att.yaw + _manual.yaw; - } + if (0/* switched from another mode to posctrl */) { + _altctrl_hold_heading = _att.yaw; + } + + if (0/* posctrl on and manual control yaw non-zero */) { + _altctrl_hold_heading = _att.yaw + _manual.r; + } - //XXX not used + //XXX not used - /* climb out control */ + /* climb out control */ // bool climb_out = false; // // /* user wants to climb out */ @@ -1073,69 +1159,69 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi // climb_out = true; // } - /* if in seatbelt mode, set airspeed based on manual control */ + /* if in altctrl mode, set airspeed based on manual control */ - // XXX check if ground speed undershoot should be applied here - float seatbelt_airspeed = _parameters.airspeed_min + - (_parameters.airspeed_max - _parameters.airspeed_min) * - _manual.throttle; + // XXX check if ground speed undershoot should be applied here + float altctrl_airspeed = _parameters.airspeed_min + + (_parameters.airspeed_max - _parameters.airspeed_min) * + _manual.z; - _l1_control.navigate_heading(_seatbelt_hold_heading, _att.yaw, ground_speed); + _l1_control.navigate_heading(_altctrl_hold_heading, _att.yaw, ground_speed_2d); _att_sp.roll_body = _l1_control.nav_roll(); _att_sp.yaw_body = _l1_control.nav_bearing(); - _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, _global_pos.alt + _manual.pitch * 2.0f, - seatbelt_airspeed, - _airspeed.indicated_airspeed_m_s, eas2tas, - false, _parameters.pitch_limit_min, - _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, - _parameters.pitch_limit_min, _parameters.pitch_limit_max); - } else if (0/* seatbelt mode enabled */) { + tecs_update_pitch_throttle(_global_pos.alt + _manual.x * 2.0f, altctrl_airspeed, eas2tas, + math::radians(_parameters.pitch_limit_min), math::radians(_parameters.pitch_limit_max), + _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, + false, math::radians(_parameters.pitch_limit_min), _global_pos.alt, ground_speed); + + } else if (0/* altctrl mode enabled */) { + + _was_pos_control_mode = false; - /** SEATBELT FLIGHT **/ + /** ALTCTRL FLIGHT **/ - if (0/* switched from another mode to seatbelt */) { - _seatbelt_hold_heading = _att.yaw; + if (0/* switched from another mode to altctrl */) { + _altctrl_hold_heading = _att.yaw; } - if (0/* seatbelt on and manual control yaw non-zero */) { - _seatbelt_hold_heading = _att.yaw + _manual.yaw; + if (0/* altctrl on and manual control yaw non-zero */) { + _altctrl_hold_heading = _att.yaw + _manual.r; } - /* if in seatbelt mode, set airspeed based on manual control */ + /* if in altctrl mode, set airspeed based on manual control */ // XXX check if ground speed undershoot should be applied here - float seatbelt_airspeed = _parameters.airspeed_min + + float altctrl_airspeed = _parameters.airspeed_min + (_parameters.airspeed_max - _parameters.airspeed_min) * - _manual.throttle; + _manual.z; /* user switched off throttle */ - if (_manual.throttle < 0.1f) { + if (_manual.z < 0.1f) { throttle_max = 0.0f; - /* switch to pure pitch based altitude control, give up speed */ - _tecs.set_speed_weight(0.0f); } /* climb out control */ bool climb_out = false; /* user wants to climb out */ - if (_manual.pitch > 0.3f && _manual.throttle > 0.8f) { + if (_manual.x > 0.3f && _manual.z > 0.8f) { climb_out = true; } - _l1_control.navigate_heading(_seatbelt_hold_heading, _att.yaw, ground_speed); - _att_sp.roll_body = _manual.roll; - _att_sp.yaw_body = _manual.yaw; - _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, _global_pos.alt + _manual.pitch * 2.0f, - seatbelt_airspeed, - _airspeed.indicated_airspeed_m_s, eas2tas, - climb_out, _parameters.pitch_limit_min, - _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, - _parameters.pitch_limit_min, _parameters.pitch_limit_max); + _l1_control.navigate_heading(_altctrl_hold_heading, _att.yaw, ground_speed_2d); + _att_sp.roll_body = _manual.y; + _att_sp.yaw_body = _manual.r; + tecs_update_pitch_throttle(_global_pos.alt + _manual.x * 2.0f, altctrl_airspeed, eas2tas, + math::radians(_parameters.pitch_limit_min), math::radians(_parameters.pitch_limit_max), + _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, + climb_out, math::radians(_parameters.pitch_limit_min), + _global_pos.alt, ground_speed); } else { + _was_pos_control_mode = false; + /** MANUAL FLIGHT **/ /* no flight mode applies, do not publish an attitude setpoint */ @@ -1152,9 +1238,9 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi _att_sp.thrust = launchDetector.getThrottlePreTakeoff(); } else { - _att_sp.thrust = math::min(_tecs.get_throttle_demand(), throttle_max); + _att_sp.thrust = math::min(_mTecs.getThrottleSetpoint(), throttle_max); } - _att_sp.pitch_body = _tecs.get_pitch_demand(); + _att_sp.pitch_body = _mTecs.getPitchSetpoint(); if (_control_mode.flag_control_position_enabled) { last_manual = false; @@ -1185,6 +1271,7 @@ FixedwingPositionControl::task_main() _airspeed_sub = orb_subscribe(ORB_ID(airspeed)); _params_sub = orb_subscribe(ORB_ID(parameter_update)); _manual_control_sub = orb_subscribe(ORB_ID(manual_control_setpoint)); + _range_finder_sub = orb_subscribe(ORB_ID(sensor_range_finder)); /* rate limit vehicle status updates to 5Hz */ orb_set_interval(_control_mode_sub, 200); @@ -1264,9 +1351,10 @@ FixedwingPositionControl::task_main() vehicle_setpoint_poll(); vehicle_sensor_combined_poll(); vehicle_airspeed_poll(); + range_finder_poll(); // vehicle_baro_poll(); - math::Vector<2> ground_speed(_global_pos.vel_n, _global_pos.vel_e); + math::Vector<3> ground_speed(_global_pos.vel_n, _global_pos.vel_e, _global_pos.vel_d); math::Vector<2> current_position((float)_global_pos.lat, (float)_global_pos.lon); /* @@ -1328,6 +1416,30 @@ void FixedwingPositionControl::reset_landing_state() land_onslope = false; } +void FixedwingPositionControl::tecs_update_pitch_throttle(float alt_sp, float v_sp, float eas2tas, + float pitch_min_rad, float pitch_max_rad, + float throttle_min, float throttle_max, float throttle_cruise, + bool climbout_mode, float climbout_pitch_min_rad, + float altitude, + const math::Vector<3> &ground_speed, + tecs_mode mode) +{ + /* Using mtecs library: prepare arguments for mtecs call */ + float flightPathAngle = 0.0f; + float ground_speed_length = ground_speed.length(); + if (ground_speed_length > FLT_EPSILON) { + flightPathAngle = -asinf(ground_speed(2)/ground_speed_length); + } + fwPosctrl::LimitOverride limitOverride; + if (climbout_mode) { + limitOverride.enablePitchMinOverride(M_RAD_TO_DEG_F * climbout_pitch_min_rad); + } else { + limitOverride.disablePitchMinOverride(); + } + _mTecs.updateAltitudeSpeed(flightPathAngle, altitude, alt_sp, _airspeed.true_airspeed_m_s, v_sp, mode, + limitOverride); +} + int FixedwingPositionControl::start() { diff --git a/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c b/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c index 37f06dbe5..52128e1b7 100644 --- a/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c +++ b/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c @@ -72,17 +72,6 @@ PARAM_DEFINE_FLOAT(FW_L1_PERIOD, 25.0f); PARAM_DEFINE_FLOAT(FW_L1_DAMPING, 0.75f); /** - * Default Loiter Radius - * - * This radius is used when no other loiter radius is set. - * - * @min 10.0 - * @max 100.0 - * @group L1 Control - */ -PARAM_DEFINE_FLOAT(FW_LOITER_R, 50.0f); - -/** * Cruise throttle * * This is the throttle setting required to achieve the desired cruise speed. Most airframes have a value of 0.5-0.7. @@ -375,3 +364,14 @@ PARAM_DEFINE_FLOAT(FW_LND_TLALT, 5.0f); * @group L1 Control */ PARAM_DEFINE_FLOAT(FW_LND_HHDIST, 15.0f); + +/** + * Relative altitude threshold for range finder measurements for use during landing + * + * range finder measurements will only be used if the estimated relative altitude (gobal_pos.alt - landing_waypoint.alt) is < FW_LND_RFRALT + * set to < 0 to disable + * the correct value of this parameter depends on your range measuring device as well as on the terrain at the landing location + * + * @group L1 Control + */ +PARAM_DEFINE_FLOAT(FW_LND_RFRALT, -1.0f); diff --git a/src/modules/fw_pos_control_l1/landingslope.cpp b/src/modules/fw_pos_control_l1/landingslope.cpp index e5f7023ae..42e00da05 100644 --- a/src/modules/fw_pos_control_l1/landingslope.cpp +++ b/src/modules/fw_pos_control_l1/landingslope.cpp @@ -46,16 +46,16 @@ #include <unistd.h> #include <mathlib/mathlib.h> -void Landingslope::update(float landing_slope_angle_rad, - float flare_relative_alt, - float motor_lim_relative_alt, - float H1_virt) +void Landingslope::update(float landing_slope_angle_rad_new, + float flare_relative_alt_new, + float motor_lim_relative_alt_new, + float H1_virt_new) { - _landing_slope_angle_rad = landing_slope_angle_rad; - _flare_relative_alt = flare_relative_alt; - _motor_lim_relative_alt = motor_lim_relative_alt; - _H1_virt = H1_virt; + _landing_slope_angle_rad = landing_slope_angle_rad_new; + _flare_relative_alt = flare_relative_alt_new; + _motor_lim_relative_alt = motor_lim_relative_alt_new; + _H1_virt = H1_virt_new; calculateSlopeValues(); } @@ -69,26 +69,46 @@ void Landingslope::calculateSlopeValues() _horizontal_slope_displacement = (_flare_length - _d1); } -float Landingslope::getLandingSlopeAbsoluteAltitude(float wp_distance, float wp_altitude) +float Landingslope::getLandingSlopeRelativeAltitude(float wp_landing_distance) { - return Landingslope::getLandingSlopeAbsoluteAltitude(wp_distance, wp_altitude, _horizontal_slope_displacement, _landing_slope_angle_rad); + return Landingslope::getLandingSlopeRelativeAltitude(wp_landing_distance, _horizontal_slope_displacement, _landing_slope_angle_rad); } -float Landingslope::getLandingSlopeAbsoluteAltitudeSave(float wp_distance, float bearing_lastwp_currwp, float bearing_airplane_currwp, float wp_altitude) +float Landingslope::getLandingSlopeRelativeAltitudeSave(float wp_landing_distance, float bearing_lastwp_currwp, float bearing_airplane_currwp) { /* If airplane is in front of waypoint return slope altitude, else return waypoint altitude */ if (fabsf(bearing_airplane_currwp - bearing_lastwp_currwp) < math::radians(90.0f)) - return getLandingSlopeAbsoluteAltitude(wp_distance, wp_altitude); + return getLandingSlopeRelativeAltitude(wp_landing_distance); + else + return 0.0f; +} + +float Landingslope::getLandingSlopeAbsoluteAltitude(float wp_landing_distance, float wp_altitude) +{ + return Landingslope::getLandingSlopeAbsoluteAltitude(wp_landing_distance, wp_altitude, _horizontal_slope_displacement, _landing_slope_angle_rad); +} + +float Landingslope::getLandingSlopeAbsoluteAltitudeSave(float wp_landing_distance, float bearing_lastwp_currwp, float bearing_airplane_currwp, float wp_altitude) +{ + /* If airplane is in front of waypoint return slope altitude, else return waypoint altitude */ + if (fabsf(bearing_airplane_currwp - bearing_lastwp_currwp) < math::radians(90.0f)) + return getLandingSlopeAbsoluteAltitude(wp_landing_distance, wp_altitude); else return wp_altitude; } -float Landingslope::getFlareCurveAltitudeSave(float wp_landing_distance, float bearing_lastwp_currwp, float bearing_airplane_currwp, float wp_landing_altitude) +float Landingslope::getFlareCurveRelativeAltitudeSave(float wp_landing_distance, float bearing_lastwp_currwp, float bearing_airplane_currwp) { /* If airplane is in front of waypoint return flare curve altitude, else return waypoint altitude */ if (fabsf(bearing_airplane_currwp - bearing_lastwp_currwp) < math::radians(90.0f)) - return wp_landing_altitude + _H0 * expf(-math::max(0.0f, _flare_length - wp_landing_distance)/_flare_constant) - _H1_virt; + return _H0 * expf(-math::max(0.0f, _flare_length - wp_landing_distance)/_flare_constant) - _H1_virt; else - return wp_landing_altitude; + return 0.0f; +} + +float Landingslope::getFlareCurveAbsoluteAltitudeSave(float wp_landing_distance, float bearing_lastwp_currwp, float bearing_airplane_currwp, float wp_landing_altitude) +{ + + return wp_landing_altitude + getFlareCurveRelativeAltitudeSave(wp_landing_distance, bearing_lastwp_currwp, bearing_airplane_currwp); } diff --git a/src/modules/fw_pos_control_l1/landingslope.h b/src/modules/fw_pos_control_l1/landingslope.h index 76d65a55f..a5975ad43 100644 --- a/src/modules/fw_pos_control_l1/landingslope.h +++ b/src/modules/fw_pos_control_l1/landingslope.h @@ -63,11 +63,26 @@ public: Landingslope() {} ~Landingslope() {} + + /** + * + * @return relative altitude of point on landing slope at distance to landing waypoint=wp_landing_distance + */ + float getLandingSlopeRelativeAltitude(float wp_landing_distance); + + /** + * + * @return relative altitude of point on landing slope at distance to landing waypoint=wp_landing_distance + * Performs check if aircraft is in front of waypoint to avoid climbout + */ + float getLandingSlopeRelativeAltitudeSave(float wp_landing_distance, float bearing_lastwp_currwp, float bearing_airplane_currwp); + + /** * * @return Absolute altitude of point on landing slope at distance to landing waypoint=wp_landing_distance */ - float getLandingSlopeAbsoluteAltitude(float wp_distance, float wp_altitude); + float getLandingSlopeAbsoluteAltitude(float wp_landing_distance, float wp_altitude); /** * @@ -78,11 +93,20 @@ public: /** * + * @return Relative altitude of point on landing slope at distance to landing waypoint=wp_landing_distance + */ + __EXPORT static float getLandingSlopeRelativeAltitude(float wp_landing_distance, float horizontal_slope_displacement, float landing_slope_angle_rad) + { + return (wp_landing_distance - horizontal_slope_displacement) * tanf(landing_slope_angle_rad); //flare_relative_alt is negative + } + + /** + * * @return Absolute altitude of point on landing slope at distance to landing waypoint=wp_landing_distance */ __EXPORT static float getLandingSlopeAbsoluteAltitude(float wp_landing_distance, float wp_landing_altitude, float horizontal_slope_displacement, float landing_slope_angle_rad) { - return (wp_landing_distance - horizontal_slope_displacement) * tanf(landing_slope_angle_rad) + wp_landing_altitude; //flare_relative_alt is negative + return getLandingSlopeRelativeAltitude(wp_landing_distance, horizontal_slope_displacement, landing_slope_angle_rad) + wp_landing_altitude; } /** @@ -95,13 +119,14 @@ public: } + float getFlareCurveRelativeAltitudeSave(float wp_distance, float bearing_lastwp_currwp, float bearing_airplane_currwp); - float getFlareCurveAltitudeSave(float wp_distance, float bearing_lastwp_currwp, float bearing_airplane_currwp, float wp_altitude); + float getFlareCurveAbsoluteAltitudeSave(float wp_distance, float bearing_lastwp_currwp, float bearing_airplane_currwp, float wp_altitude); - void update(float landing_slope_angle_rad, - float flare_relative_alt, - float motor_lim_relative_alt, - float H1_virt); + void update(float landing_slope_angle_rad_new, + float flare_relative_alt_new, + float motor_lim_relative_alt_new, + float H1_virt_new); inline float landing_slope_angle_rad() {return _landing_slope_angle_rad;} diff --git a/src/modules/fw_pos_control_l1/module.mk b/src/modules/fw_pos_control_l1/module.mk index cf419ec7e..af155fe08 100644 --- a/src/modules/fw_pos_control_l1/module.mk +++ b/src/modules/fw_pos_control_l1/module.mk @@ -39,4 +39,7 @@ MODULE_COMMAND = fw_pos_control_l1 SRCS = fw_pos_control_l1_main.cpp \ fw_pos_control_l1_params.c \ - landingslope.cpp + landingslope.cpp \ + mtecs/mTecs.cpp \ + mtecs/limitoverride.cpp \ + mtecs/mTecs_params.c diff --git a/src/modules/fw_pos_control_l1/mtecs/limitoverride.cpp b/src/modules/fw_pos_control_l1/mtecs/limitoverride.cpp new file mode 100644 index 000000000..58795edb6 --- /dev/null +++ b/src/modules/fw_pos_control_l1/mtecs/limitoverride.cpp @@ -0,0 +1,71 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: @author Thomas Gubler <thomasgubler@gmail.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + + +/** + * @file limitoverride.cpp + * + * @author Thomas Gubler <thomasgubler@gmail.com> + */ + +#include "limitoverride.h" + +namespace fwPosctrl { + +bool LimitOverride::applyOverride(BlockOutputLimiter &outputLimiterThrottle, + BlockOutputLimiter &outputLimiterPitch) +{ + bool ret = false; + + if (overrideThrottleMinEnabled) { + outputLimiterThrottle.setMin(overrideThrottleMin); + ret = true; + } + if (overrideThrottleMaxEnabled) { + outputLimiterThrottle.setMax(overrideThrottleMax); + ret = true; + } + if (overridePitchMinEnabled) { + outputLimiterPitch.setMin(overridePitchMin); + ret = true; + } + if (overridePitchMaxEnabled) { + outputLimiterPitch.setMax(overridePitchMax); + ret = true; + } + + return ret; +} + +} /* namespace fwPosctrl */ diff --git a/src/modules/fw_pos_control_l1/mtecs/limitoverride.h b/src/modules/fw_pos_control_l1/mtecs/limitoverride.h new file mode 100644 index 000000000..64c2e7bbd --- /dev/null +++ b/src/modules/fw_pos_control_l1/mtecs/limitoverride.h @@ -0,0 +1,107 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: @author Thomas Gubler <thomasgubler@gmail.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + + +/** + * @file limitoverride.h + * + * @author Thomas Gubler <thomasgubler@gmail.com> + */ + + +#ifndef LIMITOVERRIDE_H_ +#define LIMITOVERRIDE_H_ + +#include "mTecs_blocks.h" + +namespace fwPosctrl +{ + +/* A small class which provides helper functions to override control output limits which are usually set by +* parameters in special cases +*/ +class LimitOverride +{ +public: + LimitOverride() : + overrideThrottleMinEnabled(false), + overrideThrottleMaxEnabled(false), + overridePitchMinEnabled(false), + overridePitchMaxEnabled(false) + {}; + + ~LimitOverride() {}; + + /* + * Override the limits of the outputlimiter instances given by the arguments with the limits saved in + * this class (if enabled) + * @return true if the limit was applied + */ + bool applyOverride(BlockOutputLimiter &outputLimiterThrottle, + BlockOutputLimiter &outputLimiterPitch); + + /* Functions to enable or disable the override */ + void enableThrottleMinOverride(float value) { enable(&overrideThrottleMinEnabled, + &overrideThrottleMin, value); } + void disableThrottleMinOverride() { disable(&overrideThrottleMinEnabled); } + void enableThrottleMaxOverride(float value) { enable(&overrideThrottleMaxEnabled, + &overrideThrottleMax, value); } + void disableThrottleMaxOverride() { disable(&overrideThrottleMaxEnabled); } + void enablePitchMinOverride(float value) { enable(&overridePitchMinEnabled, + &overridePitchMin, value); } + void disablePitchMinOverride() { disable(&overridePitchMinEnabled); } + void enablePitchMaxOverride(float value) { enable(&overridePitchMaxEnabled, + &overridePitchMax, value); } + void disablePitchMaxOverride() { disable(&overridePitchMaxEnabled); } + +protected: + bool overrideThrottleMinEnabled; + float overrideThrottleMin; + bool overrideThrottleMaxEnabled; + float overrideThrottleMax; + bool overridePitchMinEnabled; + float overridePitchMin; //in degrees (replaces param values) + bool overridePitchMaxEnabled; + float overridePitchMax; //in degrees (replaces param values) + + /* Enable a specific limit override */ + void enable(bool *flag, float *limit, float value) { *flag = true; *limit = value; }; + + /* Disable a specific limit override */ + void disable(bool *flag) { *flag = false; }; +}; + +} /* namespace fwPosctrl */ + +#endif /* LIMITOVERRIDE_H_ */ diff --git a/src/modules/fw_pos_control_l1/mtecs/mTecs.cpp b/src/modules/fw_pos_control_l1/mtecs/mTecs.cpp new file mode 100644 index 000000000..fc0a2551c --- /dev/null +++ b/src/modules/fw_pos_control_l1/mtecs/mTecs.cpp @@ -0,0 +1,313 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: @author Thomas Gubler <thomasgubler@gmail.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + + +/** + * @file mTecs.cpp + * + * @author Thomas Gubler <thomasgubler@gmail.com> + */ + +#include "mTecs.h" + +#include <lib/geo/geo.h> +#include <stdio.h> + +namespace fwPosctrl { + +mTecs::mTecs() : + SuperBlock(NULL, "MT"), + /* Parameters */ + _mTecsEnabled(this, "ENABLED"), + _airspeedMin(this, "FW_AIRSPD_MIN", false), + /* Publications */ + _status(&getPublications(), ORB_ID(tecs_status)), + /* control blocks */ + _controlTotalEnergy(this, "THR"), + _controlEnergyDistribution(this, "PIT", true), + _controlAltitude(this, "FPA", true), + _controlAirSpeed(this, "ACC"), + _flightPathAngleLowpass(this, "FPA_LP"), + _airspeedLowpass(this, "A_LP"), + _airspeedDerivative(this, "AD"), + _throttleSp(0.0f), + _pitchSp(0.0f), + _BlockOutputLimiterTakeoffThrottle(this, "TKF_THR"), + _BlockOutputLimiterTakeoffPitch(this, "TKF_PIT", true), + _BlockOutputLimiterUnderspeedThrottle(this, "USP_THR"), + _BlockOutputLimiterUnderspeedPitch(this, "USP_PIT", true), + _BlockOutputLimiterLandThrottle(this, "LND_THR"), + _BlockOutputLimiterLandPitch(this, "LND_PIT", true), + timestampLastIteration(hrt_absolute_time()), + _firstIterationAfterReset(true), + _dtCalculated(false), + _counter(0), + _debug(false) +{ +} + +mTecs::~mTecs() +{ +} + +int mTecs::updateAltitudeSpeed(float flightPathAngle, float altitude, float altitudeSp, float airspeed, + float airspeedSp, tecs_mode mode, LimitOverride limitOverride) +{ + /* check if all input arguments are numbers and abort if not so */ + if (!isfinite(flightPathAngle) || !isfinite(altitude) || + !isfinite(altitudeSp) || !isfinite(airspeed) || !isfinite(airspeedSp) || !isfinite(mode)) { + return -1; + } + + /* time measurement */ + updateTimeMeasurement(); + + /* calculate flight path angle setpoint from altitude setpoint */ + float flightPathAngleSp = _controlAltitude.update(altitudeSp - altitude); + + /* Debug output */ + if (_counter % 10 == 0) { + debug("***"); + debug("updateAltitudeSpeed: altitudeSp %.4f, altitude %.4f, flightPathAngleSp %.4f", (double)altitudeSp, (double)altitude, (double)flightPathAngleSp); + } + + /* Write part of the status message */ + _status.altitudeSp = altitudeSp; + _status.altitude = altitude; + + + /* use flightpath angle setpoint for total energy control */ + return updateFlightPathAngleSpeed(flightPathAngle, flightPathAngleSp, airspeed, + airspeedSp, mode, limitOverride); +} + +int mTecs::updateFlightPathAngleSpeed(float flightPathAngle, float flightPathAngleSp, float airspeed, + float airspeedSp, tecs_mode mode, LimitOverride limitOverride) +{ + /* check if all input arguments are numbers and abort if not so */ + if (!isfinite(flightPathAngle) || !isfinite(flightPathAngleSp) || + !isfinite(airspeed) || !isfinite(airspeedSp) || !isfinite(mode)) { + return -1; + } + + /* time measurement */ + updateTimeMeasurement(); + + /* Filter airspeed */ + float airspeedFiltered = _airspeedLowpass.update(airspeed); + + /* calculate longitudinal acceleration setpoint from airspeed setpoint*/ + float accelerationLongitudinalSp = _controlAirSpeed.update(airspeedSp - airspeedFiltered); + + /* Debug output */ + if (_counter % 10 == 0) { + debug("updateFlightPathAngleSpeed airspeedSp %.4f, airspeed %.4f airspeedFiltered %.4f," + "accelerationLongitudinalSp%.4f", + (double)airspeedSp, (double)airspeed, + (double)airspeedFiltered, (double)accelerationLongitudinalSp); + } + + /* Write part of the status message */ + _status.airspeedSp = airspeedSp; + _status.airspeed = airspeed; + _status.airspeedFiltered = airspeedFiltered; + + + /* use longitudinal acceleration setpoint for total energy control */ + return updateFlightPathAngleAcceleration(flightPathAngle, flightPathAngleSp, airspeedFiltered, + accelerationLongitudinalSp, mode, limitOverride); +} + +int mTecs::updateFlightPathAngleAcceleration(float flightPathAngle, float flightPathAngleSp, float airspeedFiltered, + float accelerationLongitudinalSp, tecs_mode mode, LimitOverride limitOverride) +{ + /* check if all input arguments are numbers and abort if not so */ + if (!isfinite(flightPathAngle) || !isfinite(flightPathAngleSp) || + !isfinite(airspeedFiltered) || !isfinite(accelerationLongitudinalSp) || !isfinite(mode)) { + return -1; + } + /* time measurement */ + updateTimeMeasurement(); + + /* update parameters first */ + updateParams(); + + /* Filter flightpathangle */ + float flightPathAngleFiltered = _flightPathAngleLowpass.update(flightPathAngle); + + /* calculate values (energies) */ + float flightPathAngleError = flightPathAngleSp - flightPathAngleFiltered; + float airspeedDerivative = 0.0f; + if(_airspeedDerivative.getDt() > 0.0f) { + airspeedDerivative = _airspeedDerivative.update(airspeedFiltered); + } + float airspeedDerivativeNorm = airspeedDerivative / CONSTANTS_ONE_G; + float airspeedDerivativeSp = accelerationLongitudinalSp; + float airspeedDerivativeNormSp = airspeedDerivativeSp / CONSTANTS_ONE_G; + float airspeedDerivativeNormError = airspeedDerivativeNormSp - airspeedDerivativeNorm; + + float totalEnergyRate = flightPathAngleFiltered + airspeedDerivativeNorm; + float totalEnergyRateError = flightPathAngleError + airspeedDerivativeNormError; + float totalEnergyRateSp = flightPathAngleSp + airspeedDerivativeNormSp; + float totalEnergyRateError2 = totalEnergyRateSp - totalEnergyRate; + + float energyDistributionRate = flightPathAngleFiltered - airspeedDerivativeNorm; + float energyDistributionRateError = flightPathAngleError - airspeedDerivativeNormError; + float energyDistributionRateSp = flightPathAngleSp - airspeedDerivativeNormSp; + float energyDistributionRateError2 = energyDistributionRateSp - energyDistributionRate; + + /* Debug output */ + if (_counter % 10 == 0) { + debug("totalEnergyRateSp %.2f, totalEnergyRate %.2f, totalEnergyRateError %.2f totalEnergyRateError2 %.2f airspeedDerivativeNorm %.4f", + (double)totalEnergyRateSp, (double)totalEnergyRate, (double)totalEnergyRateError, (double)totalEnergyRateError2, (double)airspeedDerivativeNorm); + debug("energyDistributionRateSp %.2f, energyDistributionRate %.2f, energyDistributionRateError %.2f energyDistributionRateError2 %.2f", + (double)energyDistributionRateSp, (double)energyDistributionRate, (double)energyDistributionRateError, (double)energyDistributionRateError2); + } + + /* Check airspeed: if below safe value switch to underspeed mode (if not in land or takeoff mode) */ + if (mode != TECS_MODE_LAND && mode != TECS_MODE_TAKEOFF && airspeedFiltered < _airspeedMin.get()) { + mode = TECS_MODE_UNDERSPEED; + } + + /* Set special ouput limiters if we are not in TECS_MODE_NORMAL */ + BlockOutputLimiter *outputLimiterThrottle = &_controlTotalEnergy.getOutputLimiter(); + BlockOutputLimiter *outputLimiterPitch = &_controlEnergyDistribution.getOutputLimiter(); + if (mode == TECS_MODE_TAKEOFF) { + outputLimiterThrottle = &_BlockOutputLimiterTakeoffThrottle; + outputLimiterPitch = &_BlockOutputLimiterTakeoffPitch; + } else if (mode == TECS_MODE_LAND) { + // only limit pitch but do not limit throttle + outputLimiterPitch = &_BlockOutputLimiterLandPitch; + } else if (mode == TECS_MODE_LAND_THROTTLELIM) { + outputLimiterThrottle = &_BlockOutputLimiterLandThrottle; + outputLimiterPitch = &_BlockOutputLimiterLandPitch; + } else if (mode == TECS_MODE_UNDERSPEED) { + outputLimiterThrottle = &_BlockOutputLimiterUnderspeedThrottle; + outputLimiterPitch = &_BlockOutputLimiterUnderspeedPitch; + } + + /* Apply overrride given by the limitOverride argument (this is used for limits which are not given by + * parameters such as pitch limits with takeoff waypoints or throttle limits when the launchdetector + * is running) */ + bool limitApplied = limitOverride.applyOverride(*outputLimiterThrottle, *outputLimiterPitch); + + /* Write part of the status message */ + _status.flightPathAngleSp = flightPathAngleSp; + _status.flightPathAngle = flightPathAngle; + _status.flightPathAngleFiltered = flightPathAngleFiltered; + _status.airspeedDerivativeSp = airspeedDerivativeSp; + _status.airspeedDerivative = airspeedDerivative; + _status.totalEnergyRateSp = totalEnergyRateSp; + _status.totalEnergyRate = totalEnergyRate; + _status.energyDistributionRateSp = energyDistributionRateSp; + _status.energyDistributionRate = energyDistributionRate; + _status.mode = mode; + + /** update control blocks **/ + /* update total energy rate control block */ + _throttleSp = _controlTotalEnergy.update(totalEnergyRateSp, totalEnergyRateError, outputLimiterThrottle); + + /* update energy distribution rate control block */ + _pitchSp = _controlEnergyDistribution.update(energyDistributionRateSp, energyDistributionRateError, outputLimiterPitch); + + + if (_counter % 10 == 0) { + debug("_throttleSp %.1f, _pitchSp %.1f, flightPathAngleSp %.1f, flightPathAngle %.1f accelerationLongitudinalSp %.1f, airspeedDerivative %.1f", + (double)_throttleSp, (double)_pitchSp, + (double)flightPathAngleSp, (double)flightPathAngle, + (double)accelerationLongitudinalSp, (double)airspeedDerivative); + } + + /* publish status messge */ + _status.update(); + + /* clean up */ + _firstIterationAfterReset = false; + _dtCalculated = false; + + _counter++; + + return 0; +} + +void mTecs::resetIntegrators() +{ + _controlTotalEnergy.getIntegral().setY(0.0f); + _controlEnergyDistribution.getIntegral().setY(0.0f); + timestampLastIteration = hrt_absolute_time(); + _firstIterationAfterReset = true; +} + +void mTecs::resetDerivatives(float airspeed) +{ + _airspeedDerivative.setU(airspeed); +} + + +void mTecs::updateTimeMeasurement() +{ + if (!_dtCalculated) { + float deltaTSeconds = 0.0f; + if (!_firstIterationAfterReset) { + hrt_abstime timestampNow = hrt_absolute_time(); + deltaTSeconds = (float)(timestampNow - timestampLastIteration) * 1e-6f; + timestampLastIteration = timestampNow; + } + setDt(deltaTSeconds); + + _dtCalculated = true; + } +} + +void mTecs::debug_print(const char *fmt, va_list args) +{ + fprintf(stderr, "%s: ", "[mtecs]"); + vfprintf(stderr, fmt, args); + + fprintf(stderr, "\n"); +} + +void mTecs::debug(const char *fmt, ...) { + + if (!_debug) { + return; + } + + va_list args; + + va_start(args, fmt); + debug_print(fmt, args); +} + +} /* namespace fwPosctrl */ diff --git a/src/modules/fw_pos_control_l1/mtecs/mTecs.h b/src/modules/fw_pos_control_l1/mtecs/mTecs.h new file mode 100644 index 000000000..efa89a5d3 --- /dev/null +++ b/src/modules/fw_pos_control_l1/mtecs/mTecs.h @@ -0,0 +1,155 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: @author Thomas Gubler <thomasgubler@gmail.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + + +/** + * @file mTecs.h + * + * @author Thomas Gubler <thomasgubler@gmail.com> + */ + + +#ifndef MTECS_H_ +#define MTECS_H_ + +#include "mTecs_blocks.h" +#include "limitoverride.h" + +#include <controllib/block/BlockParam.hpp> +#include <drivers/drv_hrt.h> +#include <uORB/Publication.hpp> +#include <uORB/topics/tecs_status.h> + +namespace fwPosctrl +{ + +/* Main class of the mTecs */ +class mTecs : public control::SuperBlock +{ +public: + mTecs(); + virtual ~mTecs(); + + /* + * Control in altitude setpoint and speed mode + */ + int updateAltitudeSpeed(float flightPathAngle, float altitude, float altitudeSp, float airspeed, + float airspeedSp, tecs_mode mode, LimitOverride limitOverride); + + /* + * Control in flightPathAngle setpoint (flollow a slope etc.) and speed mode + */ + int updateFlightPathAngleSpeed(float flightPathAngle, float flightPathAngleSp, float airspeed, + float airspeedSp, tecs_mode mode, LimitOverride limitOverride); + + /* + * Control in flightPathAngle setpoint (flollow a slope etc.) and acceleration mode (base case) + */ + int updateFlightPathAngleAcceleration(float flightPathAngle, float flightPathAngleSp, float airspeedFiltered, + float accelerationLongitudinalSp, tecs_mode mode, LimitOverride limitOverride); + + /* + * Reset all integrators + */ + void resetIntegrators(); + + /* + * Reset all derivative calculations + */ + void resetDerivatives(float airspeed); + + /* Accessors */ + bool getEnabled() { return _mTecsEnabled.get() > 0; } + float getThrottleSetpoint() { return _throttleSp; } + float getPitchSetpoint() { return _pitchSp; } + float airspeedLowpassUpdate(float input) { return _airspeedLowpass.update(input); } + +protected: + /* parameters */ + control::BlockParamInt _mTecsEnabled; /**< 1 if mTecs is enabled */ + control::BlockParamFloat _airspeedMin; /**< minimal airspeed */ + + /* Publications */ + uORB::Publication<tecs_status_s> _status; /**< publish internal values for logging */ + + /* control blocks */ + BlockFFPILimitedCustom _controlTotalEnergy; /**< FFPI controller for total energy control: output + is throttle */ + BlockFFPILimitedCustom _controlEnergyDistribution; /**< FFPI controller for energy distribution control: + output is pitch */ + BlockPDLimited _controlAltitude; /**< PD controller for altitude: output is the flight + path angle setpoint */ + BlockPDLimited _controlAirSpeed; /**< PD controller for airspeed: output is acceleration + setpoint */ + + /* Other calculation Blocks */ + control::BlockLowPass _flightPathAngleLowpass; /**< low pass filter for the flight path angle */ + control::BlockLowPass _airspeedLowpass; /**< low pass filter for airspeed */ + control::BlockDerivative _airspeedDerivative; /**< airspeed derivative calulation */ + + /* Output setpoints */ + float _throttleSp; /**< Throttle Setpoint from 0 to 1 */ + float _pitchSp; /**< Pitch Setpoint from -pi to pi */ + + /* Output Limits in special modes */ + BlockOutputLimiter _BlockOutputLimiterTakeoffThrottle; /**< Throttle Limits during takeoff */ + BlockOutputLimiter _BlockOutputLimiterTakeoffPitch; /**< Pitch Limit during takeoff */ + BlockOutputLimiter _BlockOutputLimiterUnderspeedThrottle; /**< Throttle Limits when underspeed is detected */ + BlockOutputLimiter _BlockOutputLimiterUnderspeedPitch; /**< Pitch Limit when underspeed is detected */ + BlockOutputLimiter _BlockOutputLimiterLandThrottle; /**< Throttle Limits during landing (only in + last phase)*/ + BlockOutputLimiter _BlockOutputLimiterLandPitch; /**< Pitch Limit during landing */ + + /* Time measurements */ + hrt_abstime timestampLastIteration; /**< Saves the result of hrt_absolute_time() of the last iteration */ + + bool _firstIterationAfterReset; /**< True during the first iteration after a reset */ + bool _dtCalculated; /**< True if dt has been calculated in this iteration */ + + int _counter; + bool _debug; ///< Set true to enable debug output + + + static void debug_print(const char *fmt, va_list args); + void debug(const char *fmt, ...); + + /* + * Measure and update the time step dt if this was not already done in the current iteration + */ + void updateTimeMeasurement(); +}; + +} /* namespace fwPosctrl */ + +#endif /* MTECS_H_ */ diff --git a/src/modules/fw_pos_control_l1/mtecs/mTecs_blocks.h b/src/modules/fw_pos_control_l1/mtecs/mTecs_blocks.h new file mode 100644 index 000000000..e4e405227 --- /dev/null +++ b/src/modules/fw_pos_control_l1/mtecs/mTecs_blocks.h @@ -0,0 +1,220 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: @author Thomas Gubler <thomasgubler@gmail.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + + +/** + * @file mTecs_blocks.h + * + * Custom blocks for the mTecs + * + * @author Thomas Gubler <thomasgubler@gmail.com> + */ + +#pragma once + +#include <controllib/blocks.hpp> +#include <systemlib/err.h> + +namespace fwPosctrl +{ + +using namespace control; + +/* An block which can be used to limit the output */ +class BlockOutputLimiter: public SuperBlock +{ +public: +// methods + BlockOutputLimiter(SuperBlock *parent, const char *name, bool isAngularLimit = false) : + SuperBlock(parent, name), + _isAngularLimit(isAngularLimit), + _min(this, "MIN"), + _max(this, "MAX") + {}; + virtual ~BlockOutputLimiter() {}; + /* + * Imposes the limits given by _min and _max on value + * + * @param value is changed to be on the interval _min to _max + * @param difference if the value is changed this corresponds to the change of value * (-1) + * otherwise unchanged + * @return: true if the limit is applied, false otherwise + */ + bool limit(float& value, float& difference) { + float minimum = isAngularLimit() ? getMin() * M_DEG_TO_RAD_F : getMin(); + float maximum = isAngularLimit() ? getMax() * M_DEG_TO_RAD_F : getMax(); + if (value < minimum) { + difference = value - minimum; + value = minimum; + return true; + } else if (value > maximum) { + difference = value - maximum; + value = maximum; + return true; + } + return false; + } +//accessor: + bool isAngularLimit() {return _isAngularLimit ;} + float getMin() { return _min.get(); } + float getMax() { return _max.get(); } + void setMin(float value) { _min.set(value); } + void setMax(float value) { _max.set(value); } +protected: +//attributes + bool _isAngularLimit; + control::BlockParamFloat _min; + control::BlockParamFloat _max; +}; + + +/* A combination of feed forward, P and I gain using the output limiter*/ +class BlockFFPILimited: public SuperBlock +{ +public: +// methods + BlockFFPILimited(SuperBlock *parent, const char *name, bool isAngularLimit = false) : + SuperBlock(parent, name), + _outputLimiter(this, "", isAngularLimit), + _integral(this, "I"), + _kFF(this, "FF"), + _kP(this, "P"), + _kI(this, "I"), + _offset(this, "OFF") + {}; + virtual ~BlockFFPILimited() {}; + float update(float inputValue, float inputError) { return calcLimitedOutput(inputValue, inputError, _outputLimiter); } +// accessors + BlockIntegral &getIntegral() { return _integral; } + float getKFF() { return _kFF.get(); } + float getKP() { return _kP.get(); } + float getKI() { return _kI.get(); } + float getOffset() { return _offset.get(); } + BlockOutputLimiter &getOutputLimiter() { return _outputLimiter; }; +protected: + BlockOutputLimiter _outputLimiter; + + float calcUnlimitedOutput(float inputValue, float inputError) {return getOffset() + getKFF() * inputValue + getKP() * inputError + getKI() * getIntegral().update(inputError);} + float calcLimitedOutput(float inputValue, float inputError, BlockOutputLimiter &outputLimiter) { + float difference = 0.0f; + float integralYPrevious = _integral.getY(); + float output = calcUnlimitedOutput(inputValue, inputError); + if(outputLimiter.limit(output, difference) && + (((difference < 0) && (getKI() * getIntegral().getY() < 0)) || + ((difference > 0) && (getKI() * getIntegral().getY() > 0)))) { + getIntegral().setY(integralYPrevious); + } + return output; + } +private: + BlockIntegral _integral; + BlockParamFloat _kFF; + BlockParamFloat _kP; + BlockParamFloat _kI; + BlockParamFloat _offset; +}; + +/* A combination of feed forward, P and I gain using the output limiter with the option to provide a special output limiter (for example for takeoff)*/ +class BlockFFPILimitedCustom: public BlockFFPILimited +{ +public: +// methods + BlockFFPILimitedCustom(SuperBlock *parent, const char *name, bool isAngularLimit = false) : + BlockFFPILimited(parent, name, isAngularLimit) + {}; + virtual ~BlockFFPILimitedCustom() {}; + float update(float inputValue, float inputError, BlockOutputLimiter *outputLimiter = NULL) { + return calcLimitedOutput(inputValue, inputError, outputLimiter == NULL ? _outputLimiter : *outputLimiter); + } +}; + +/* A combination of P gain and output limiter */ +class BlockPLimited: public SuperBlock +{ +public: +// methods + BlockPLimited(SuperBlock *parent, const char *name, bool isAngularLimit = false) : + SuperBlock(parent, name), + _kP(this, "P"), + _outputLimiter(this, "", isAngularLimit) + {}; + virtual ~BlockPLimited() {}; + float update(float input) { + float difference = 0.0f; + float output = getKP() * input; + getOutputLimiter().limit(output, difference); + return output; + } +// accessors + BlockOutputLimiter &getOutputLimiter() { return _outputLimiter; }; + float getKP() { return _kP.get(); } +private: + control::BlockParamFloat _kP; + BlockOutputLimiter _outputLimiter; +}; + +/* A combination of P, D gains and output limiter */ +class BlockPDLimited: public SuperBlock +{ +public: +// methods + BlockPDLimited(SuperBlock *parent, const char *name, bool isAngularLimit = false) : + SuperBlock(parent, name), + _kP(this, "P"), + _kD(this, "D"), + _derivative(this, "D"), + _outputLimiter(this, "", isAngularLimit) + {}; + virtual ~BlockPDLimited() {}; + float update(float input) { + float difference = 0.0f; + float output = getKP() * input + (getDerivative().getDt() > 0.0f ? getKD() * getDerivative().update(input) : 0.0f); + getOutputLimiter().limit(output, difference); + + return output; + } +// accessors + float getKP() { return _kP.get(); } + float getKD() { return _kD.get(); } + BlockDerivative &getDerivative() { return _derivative; } + BlockOutputLimiter &getOutputLimiter() { return _outputLimiter; }; +private: + control::BlockParamFloat _kP; + control::BlockParamFloat _kD; + BlockDerivative _derivative; + BlockOutputLimiter _outputLimiter; +}; + +} + diff --git a/src/modules/fw_pos_control_l1/mtecs/mTecs_params.c b/src/modules/fw_pos_control_l1/mtecs/mTecs_params.c new file mode 100644 index 000000000..5b9238780 --- /dev/null +++ b/src/modules/fw_pos_control_l1/mtecs/mTecs_params.c @@ -0,0 +1,419 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: @author Thomas Gubler <thomasgubler@gmail.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + + +/** + * @file mTecs_params.c + * + * @author Thomas Gubler <thomasgubler@gmail.com> + */ + +#include <nuttx/config.h> +#include <systemlib/param/param.h> + +/* + * Controller parameters, accessible via MAVLink + */ + +/** + * mTECS enabled + * + * Set to 1 to enable mTECS + * + * @min 0 + * @max 1 + * @group mTECS + */ +PARAM_DEFINE_INT32(MT_ENABLED, 1); + +/** + * Total Energy Rate Control Feedforward + * Maps the total energy rate setpoint to the throttle setpoint + * + * @min 0.0 + * @max 10.0 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_THR_FF, 0.7f); + +/** + * Total Energy Rate Control P + * Maps the total energy rate error to the throttle setpoint + * + * @min 0.0 + * @max 10.0 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_THR_P, 0.1f); + +/** + * Total Energy Rate Control I + * Maps the integrated total energy rate to the throttle setpoint + * + * @min 0.0 + * @max 10.0 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_THR_I, 0.25f); + +/** + * Total Energy Rate Control Offset (Cruise throttle sp) + * + * @min 0.0 + * @max 10.0 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_THR_OFF, 0.7f); + +/** + * Energy Distribution Rate Control Feedforward + * Maps the energy distribution rate setpoint to the pitch setpoint + * + * @min 0.0 + * @max 10.0 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_PIT_FF, 0.4f); + +/** + * Energy Distribution Rate Control P + * Maps the energy distribution rate error to the pitch setpoint + * + * @min 0.0 + * @max 10.0 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_PIT_P, 0.03f); + +/** + * Energy Distribution Rate Control I + * Maps the integrated energy distribution rate error to the pitch setpoint + * + * @min 0.0 + * @max 10.0 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_PIT_I, 0.03f); + + +/** + * Total Energy Distribution Offset (Cruise pitch sp) + * + * @min 0.0 + * @max 10.0 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_PIT_OFF, 0.0f); + +/** + * Minimal Throttle Setpoint + * + * @min 0.0 + * @max 1.0 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_THR_MIN, 0.0f); + +/** + * Maximal Throttle Setpoint + * + * @min 0.0 + * @max 1.0 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_THR_MAX, 1.0f); + +/** + * Minimal Pitch Setpoint in Degrees + * + * @min -90.0f + * @max 90.0f + * @unit deg + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_PIT_MIN, -45.0f); + +/** + * Maximal Pitch Setpoint in Degrees + * + * @min -90.0f + * @max 90.0f + * @unit deg + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_PIT_MAX, 20.0f); + +/** + * Lowpass (cutoff freq.) for the flight path angle + * + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_FPA_LP, 1.0f); + +/** + * P gain for the altitude control + * Maps the altitude error to the flight path angle setpoint + * + * @min 0.0f + * @max 10.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_FPA_P, 0.3f); + +/** + * D gain for the altitude control + * Maps the change of altitude error to the flight path angle setpoint + * + * @min 0.0f + * @max 10.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_FPA_D, 0.0f); + +/** + * Lowpass for FPA error derivative calculation (see MT_FPA_D) + * + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_FPA_D_LP, 1.0f); + + +/** + * Minimal flight path angle setpoint + * + * @min -90.0f + * @max 90.0f + * @unit deg + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_FPA_MIN, -20.0f); + +/** + * Maximal flight path angle setpoint + * + * @min -90.0f + * @max 90.0f + * @unit deg + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_FPA_MAX, 30.0f); + +/** + * Lowpass (cutoff freq.) for airspeed + * + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_A_LP, 1.0f); + +/** + * P gain for the airspeed control + * Maps the airspeed error to the acceleration setpoint + * + * @min 0.0f + * @max 10.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_ACC_P, 0.3f); + +/** + * D gain for the airspeed control + * Maps the change of airspeed error to the acceleration setpoint + * + * @min 0.0f + * @max 10.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_ACC_D, 0.0f); + +/** + * Lowpass for ACC error derivative calculation (see MT_ACC_D) + * + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_ACC_D_LP, 1.0f); + +/** + * Minimal acceleration (air) + * + * @unit m/s^2 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_ACC_MIN, -40.0f); + +/** + * Maximal acceleration (air) + * +* @unit m/s^2 + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_ACC_MAX, 40.0f); + +/** + * Airspeed derivative calculation lowpass + * + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_AD_LP, 1.0f); + +/** + * Minimal throttle during takeoff + * + * @min 0.0f + * @max 1.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_TKF_THR_MIN, 1.0f); + +/** + * Maximal throttle during takeoff + * + * @min 0.0f + * @max 1.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_TKF_THR_MAX, 1.0f); + +/** + * Minimal pitch during takeoff + * + * @min -90.0f + * @max 90.0f + * @unit deg + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_TKF_PIT_MIN, 0.0f); + +/** + * Maximal pitch during takeoff + * + * @min -90.0f + * @max 90.0f + * @unit deg + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_TKF_PIT_MAX, 45.0f); + +/** + * Minimal throttle in underspeed mode + * + * @min 0.0f + * @max 1.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_USP_THR_MIN, 1.0f); + +/** + * Maximal throttle in underspeed mode + * + * @min 0.0f + * @max 1.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_USP_THR_MAX, 1.0f); + +/** + * Minimal pitch in underspeed mode + * + * @min -90.0f + * @max 90.0f + * @unit deg + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_USP_PIT_MIN, -45.0f); + +/** + * Maximal pitch in underspeed mode + * + * @min -90.0f + * @max 90.0f + * @unit deg + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_USP_PIT_MAX, 0.0f); + +/** + * Minimal throttle in landing mode (only last phase of landing) + * + * @min 0.0f + * @max 1.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_LND_THR_MIN, 0.0f); + +/** + * Maximal throttle in landing mode (only last phase of landing) + * + * @min 0.0f + * @max 1.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_LND_THR_MAX, 0.0f); + +/** + * Minimal pitch in landing mode + * + * @min -90.0f + * @max 90.0f + * @unit deg + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_LND_PIT_MIN, -5.0f); + +/** + * Maximal pitch in landing mode + * + * @min -90.0f + * @max 90.0f + * @unit deg + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_LND_PIT_MAX, 15.0f); + +/** + * Integrator Limit for Total Energy Rate Control + * + * @min 0.0f + * @max 10.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_THR_I_MAX, 10.0f); + +/** + * Integrator Limit for Energy Distribution Rate Control + * + * @min 0.0f + * @max 10.0f + * @group mTECS + */ +PARAM_DEFINE_FLOAT(MT_PIT_I_MAX, 10.0f); |