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author | Julian Oes <julian@oes.ch> | 2014-05-26 20:19:11 +0200 |
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committer | Julian Oes <julian@oes.ch> | 2014-05-26 20:19:11 +0200 |
commit | 063caba36bd2fe26eb4bfa8e546e9551ccc05519 (patch) | |
tree | d8ea5015111793800d945fbc33505088cf5fe12d /src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp | |
parent | 68352cb923d366b66bb68c8d946c4960b6f7ff1a (diff) | |
parent | 36495cdb62e21b30a5a1851ec802c9f6a40c1171 (diff) | |
download | px4-firmware-063caba36bd2fe26eb4bfa8e546e9551ccc05519.tar.gz px4-firmware-063caba36bd2fe26eb4bfa8e546e9551ccc05519.tar.bz2 px4-firmware-063caba36bd2fe26eb4bfa8e546e9551ccc05519.zip |
Merge branch 'master' into navigator_rewrite
Conflicts:
src/drivers/gps/gps.cpp
src/drivers/gps/mtk.cpp
src/modules/commander/commander.cpp
src/modules/ekf_att_pos_estimator/ekf_att_pos_estimator_main.cpp
src/modules/navigator/mission.cpp
src/modules/navigator/mission.h
src/modules/navigator/navigator_main.cpp
src/modules/navigator/navigator_state.h
src/modules/position_estimator_inav/position_estimator_inav_main.c
Diffstat (limited to 'src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp')
-rw-r--r-- | src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp | 152 |
1 files changed, 104 insertions, 48 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 a00a388a8..a53118dec 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 @@ -89,6 +89,7 @@ #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" @@ -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 */ @@ -147,11 +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 */ /** 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; @@ -179,7 +182,7 @@ private: /* Landingslope object */ Landingslope landingslope; - float flare_curve_alt_last; + float flare_curve_alt_rel_last; /* heading hold */ float target_bearing; @@ -237,6 +240,7 @@ 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 */ @@ -281,6 +285,7 @@ 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 */ @@ -307,6 +312,12 @@ private: bool vehicle_airspeed_poll(); /** + * Check for range finder updates. + */ + bool range_finder_poll(); + + + /** * Check for position updates. */ void vehicle_attitude_poll(); @@ -327,6 +338,11 @@ 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, @@ -343,7 +359,7 @@ private: /** * Main sensor collection task. */ - void task_main() __attribute__((noreturn)); + void task_main(); /* * Reset takeoff state @@ -382,6 +398,7 @@ FixedwingPositionControl::FixedwingPositionControl() : _control_mode_sub(-1), _params_sub(-1), _manual_control_sub(-1), + _range_finder_sub(-1), /* publications */ _attitude_sp_pub(-1), @@ -398,9 +415,9 @@ 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), @@ -414,7 +431,8 @@ FixedwingPositionControl::FixedwingPositionControl() : _control_mode(), _global_pos(), _pos_sp_triplet(), - _sensor_combined() + _sensor_combined(), + _range_finder() { _nav_capabilities.turn_distance = 0.0f; @@ -439,6 +457,7 @@ 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"); @@ -528,6 +547,8 @@ 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)); @@ -623,6 +644,20 @@ FixedwingPositionControl::vehicle_airspeed_poll() 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() { @@ -750,6 +785,23 @@ 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, const struct position_setpoint_triplet_s &pos_sp_triplet) @@ -892,12 +944,14 @@ 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 = landingslope.getLandingSlopeRelativeAltitude(L_wp_distance); 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); + + float relative_alt = get_relative_landingalt(_pos_sp_triplet.current.alt, _global_pos.alt, _range_finder, _parameters.range_finder_rel_alt); - 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 + if ( (relative_alt < landingslope.flare_relative_alt()) || land_noreturn_vertical) { //checking for land_noreturn to avoid unwanted climb out /* land with minimal speed */ @@ -907,7 +961,7 @@ 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; @@ -916,16 +970,16 @@ 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), + _tecs.update_pitch_throttle(_R_nb, _att.pitch, _pos_sp_triplet.current.alt + relative_alt, _pos_sp_triplet.current.alt + flare_curve_alt_rel, calculate_target_airspeed(airspeed_land), _airspeed.indicated_airspeed_m_s, eas2tas, false, flare_pitch_angle_rad, 0.0f, throttle_max, throttle_land, @@ -937,7 +991,7 @@ 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: @@ -945,20 +999,20 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi * 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 * */ - 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 - 10.0f) { /* 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 = math::max(relative_alt, L_altitude_rel); } - _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, altitude_desired, calculate_target_airspeed(airspeed_approach), + _tecs.update_pitch_throttle(_R_nb, _att.pitch, _pos_sp_triplet.current.alt + relative_alt, _pos_sp_triplet.current.alt + altitude_desired_rel, 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, @@ -1047,16 +1101,16 @@ 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 **/ + /** POSCTRL FLIGHT **/ - if (0/* switched from another mode to easy */) { - _seatbelt_hold_heading = _att.yaw; + if (0/* switched from another mode to posctrl */) { + _altctrl_hold_heading = _att.yaw; } - if (0/* easy on and manual control yaw non-zero */) { - _seatbelt_hold_heading = _att.yaw + _manual.yaw; + if (0/* posctrl on and manual control yaw non-zero */) { + _altctrl_hold_heading = _att.yaw + _manual.r; } //XXX not used @@ -1069,44 +1123,44 @@ 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 + + float altctrl_airspeed = _parameters.airspeed_min + (_parameters.airspeed_max - _parameters.airspeed_min) * - _manual.throttle; + _manual.z; - _l1_control.navigate_heading(_seatbelt_hold_heading, _att.yaw, ground_speed); + _l1_control.navigate_heading(_altctrl_hold_heading, _att.yaw, ground_speed); _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, + _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, _global_pos.alt + _manual.x * 2.0f, + altctrl_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 */) { + } else if (0/* altctrl mode enabled */) { - /** 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); @@ -1116,15 +1170,15 @@ FixedwingPositionControl::control_position(const math::Vector<2> ¤t_positi 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, + _l1_control.navigate_heading(_altctrl_hold_heading, _att.yaw, ground_speed); + _att_sp.roll_body = _manual.y; + _att_sp.yaw_body = _manual.r; + _tecs.update_pitch_throttle(_R_nb, _att.pitch, _global_pos.alt, _global_pos.alt + _manual.x * 2.0f, + altctrl_airspeed, _airspeed.indicated_airspeed_m_s, eas2tas, climb_out, _parameters.pitch_limit_min, _parameters.throttle_min, _parameters.throttle_max, _parameters.throttle_cruise, @@ -1181,6 +1235,7 @@ 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); @@ -1260,6 +1315,7 @@ 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); |