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author | Thomas Gubler <thomasgubler@gmail.com> | 2012-10-28 18:35:08 +0100 |
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committer | Thomas Gubler <thomasgubler@gmail.com> | 2012-10-28 18:35:08 +0100 |
commit | b692c300d01bf075884a00cc75cea15e06f0e0db (patch) | |
tree | 90c5577aa8d98a119274b79600646c675c079526 | |
parent | 69e938aac3183780b1afcc3715f232c8e092994a (diff) | |
download | px4-firmware-b692c300d01bf075884a00cc75cea15e06f0e0db.tar.gz px4-firmware-b692c300d01bf075884a00cc75cea15e06f0e0db.tar.bz2 px4-firmware-b692c300d01bf075884a00cc75cea15e06f0e0db.zip |
fw control: added Dougs horizontal navigation controller
4 files changed, 92 insertions, 48 deletions
diff --git a/apps/fixedwing_att_control/fixedwing_att_control_att.c b/apps/fixedwing_att_control/fixedwing_att_control_att.c index 4193bbfdf..29e9ee1bc 100644 --- a/apps/fixedwing_att_control/fixedwing_att_control_att.c +++ b/apps/fixedwing_att_control/fixedwing_att_control_att.c @@ -72,23 +72,23 @@ struct fw_att_control_params { float pitch_roll_compensation_p; }; -struct fw_pos_control_params_handle { - float roll_p; - float rollrate_lim; - float pitch_p; - float pitch_lim; - float pitchrate_lim; - float yawrate_lim; - float pitch_roll_compensation_p; +struct fw_pos_control_param_handles { + param_t roll_p; + param_t rollrate_lim; + param_t pitch_p; + param_t pitch_lim; + param_t pitchrate_lim; + param_t yawrate_lim; + param_t pitch_roll_compensation_p; }; /* Internal Prototypes */ -static int parameters_init(struct fw_pos_control_params_handle *h); -static int parameters_update(const struct fw_pos_control_params_handle *h, struct fw_att_control_params *p); +static int parameters_init(struct fw_pos_control_param_handles *h); +static int parameters_update(const struct fw_pos_control_param_handles *h, struct fw_att_control_params *p); -static int parameters_init(struct fw_pos_control_params_handle *h) +static int parameters_init(struct fw_pos_control_param_handles *h) { /* PID parameters */ h->roll_p = param_find("FW_ROLL_P"); @@ -102,7 +102,7 @@ static int parameters_init(struct fw_pos_control_params_handle *h) return OK; } -static int parameters_update(const struct fw_pos_control_params_handle *h, struct fw_att_control_params *p) +static int parameters_update(const struct fw_pos_control_param_handles *h, struct fw_att_control_params *p) { param_get(h->roll_p, &(p->roll_p)); param_get(h->rollrate_lim, &(p->rollrate_lim)); @@ -122,7 +122,7 @@ int fixedwing_att_control_attitude(const struct vehicle_attitude_setpoint_s *att static bool initialized = false; static struct fw_att_control_params p; - static struct fw_pos_control_params_handle h; + static struct fw_pos_control_param_handles h; static PID_t roll_controller; static PID_t pitch_controller; diff --git a/apps/fixedwing_att_control/fixedwing_att_control_main.c b/apps/fixedwing_att_control/fixedwing_att_control_main.c index d4fc0afae..ad0f201e1 100644 --- a/apps/fixedwing_att_control/fixedwing_att_control_main.c +++ b/apps/fixedwing_att_control/fixedwing_att_control_main.c @@ -76,7 +76,7 @@ PARAM_DEFINE_FLOAT(FW_ROLLR_P, 0.9f); PARAM_DEFINE_FLOAT(FW_ROLLR_I, 0.2f); PARAM_DEFINE_FLOAT(FW_ROLLR_AWU, 0.9f); PARAM_DEFINE_FLOAT(FW_ROLLR_LIM, 0.7f); // Roll rate limit in radians/sec, applies to the roll controller -PARAM_DEFINE_FLOAT(FW_ROLL_P, 9.0f); +PARAM_DEFINE_FLOAT(FW_ROLL_P, 4.0f); PARAM_DEFINE_FLOAT(FW_PITCH_RCOMP, 0.1f); //Pitch control parameters diff --git a/apps/fixedwing_att_control/fixedwing_att_control_rate.c b/apps/fixedwing_att_control/fixedwing_att_control_rate.c index 21b3eeb4e..567f03784 100644 --- a/apps/fixedwing_att_control/fixedwing_att_control_rate.c +++ b/apps/fixedwing_att_control/fixedwing_att_control_rate.c @@ -77,15 +77,15 @@ struct fw_rate_control_params { }; struct fw_rate_control_param_handles { - float rollrate_p; - float rollrate_i; - float rollrate_awu; - float pitchrate_p; - float pitchrate_i; - float pitchrate_awu; - float yawrate_p; - float yawrate_i; - float yawrate_awu; + param_t rollrate_p; + param_t rollrate_i; + param_t rollrate_awu; + param_t pitchrate_p; + param_t pitchrate_i; + param_t pitchrate_awu; + param_t yawrate_p; + param_t yawrate_i; + param_t yawrate_awu; }; diff --git a/apps/fixedwing_pos_control/fixedwing_pos_control_main.c b/apps/fixedwing_pos_control/fixedwing_pos_control_main.c index 9efe9cb34..5cab8eea7 100644 --- a/apps/fixedwing_pos_control/fixedwing_pos_control_main.c +++ b/apps/fixedwing_pos_control/fixedwing_pos_control_main.c @@ -56,6 +56,7 @@ #include <uORB/topics/manual_control_setpoint.h> #include <uORB/topics/actuator_controls.h> #include <uORB/topics/vehicle_rates_setpoint.h> +#include <uORB/topics/vehicle_attitude.h> #include <systemlib/param/param.h> #include <systemlib/pid/pid.h> #include <systemlib/geo/geo.h> @@ -65,17 +66,21 @@ * Controller parameters, accessible via MAVLink * */ +PARAM_DEFINE_FLOAT(FW_HEADING_P, 0.1f); PARAM_DEFINE_FLOAT(FW_ROLL_LIM, 0.7f); // Roll angle limit in radians PARAM_DEFINE_FLOAT(FW_PITCH_LIM, 0.35f); // Pitch angle limit in radians struct fw_pos_control_params { + float heading_p; float roll_lim; float pitch_lim; }; struct fw_pos_control_param_handles { - float roll_lim; - float pitch_lim; + param_t heading_p; + param_t roll_lim; + param_t pitch_lim; + }; @@ -111,6 +116,7 @@ static int deamon_task; /**< Handle of deamon task / thread */ static int parameters_init(struct fw_pos_control_param_handles *h) { /* PID parameters */ + h->heading_p = param_find("FW_HEADING_P"); h->roll_lim = param_find("FW_ROLL_LIM"); h->pitch_lim = param_find("FW_PITCH_LIM"); @@ -120,6 +126,7 @@ static int parameters_init(struct fw_pos_control_param_handles *h) static int parameters_update(const struct fw_pos_control_param_handles *h, struct fw_pos_control_params *p) { + param_get(h->heading_p, &(p->heading_p)); param_get(h->roll_lim, &(p->roll_lim)); param_get(h->pitch_lim, &(p->pitch_lim)); @@ -143,33 +150,35 @@ int fixedwing_pos_control_thread_main(int argc, char *argv[]) printf("[fixedwing att_control] started\n"); /* declare and safely initialize all structs */ - + struct vehicle_global_position_s global_pos; + memset(&global_pos, 0, sizeof(global_pos)); + struct vehicle_global_position_setpoint_s global_setpoint; + memset(&global_setpoint, 0, sizeof(global_setpoint)); + struct vehicle_attitude_s att; + memset(&att, 0, sizeof(att)); /* output structs */ struct vehicle_attitude_setpoint_s attitude_setpoint; memset(&attitude_setpoint, 0, sizeof(attitude_setpoint)); /* publish attitude setpoint */ - attitude_setpoint.roll_tait_bryan = 0.0f; - attitude_setpoint.pitch_tait_bryan = 0.2f; //TODO: for testing + attitude_setpoint.pitch_tait_bryan = 0.0f; attitude_setpoint.yaw_tait_bryan = 0.0f; orb_advert_t attitude_setpoint_pub = orb_advertise(ORB_ID(vehicle_attitude_setpoint), &attitude_setpoint); - - -// /* subscribe */ -// + /* subscribe */ + int global_pos_sub = orb_subscribe(ORB_ID(vehicle_global_position)); + int global_setpoint_sub = orb_subscribe(ORB_ID(vehicle_global_position_setpoint)); + int att_sub = orb_subscribe(ORB_ID(vehicle_attitude)); /* Setup of loop */ -// struct pollfd fds = { .fd = att_sub, .events = POLLIN }; + struct pollfd fds = { .fd = att_sub, .events = POLLIN }; while(!thread_should_exit) { /* wait for a sensor update, check for exit condition every 500 ms */ -// poll(&fds, 1, 500); - sleep(500); //TODO removeme, this is for testing only - + poll(&fds, 1, 500); static int counter = 0; static bool initialized = false; @@ -177,23 +186,58 @@ int fixedwing_pos_control_thread_main(int argc, char *argv[]) static struct fw_pos_control_params p; static struct fw_pos_control_param_handles h; + PID_t heading_controller; + if(!initialized) - { - parameters_init(&h); - parameters_update(&h, &p); - initialized = true; - } + { + parameters_init(&h); + parameters_update(&h, &p); + pid_init(&heading_controller, p.heading_p, 0.0f, 0.0f, 0.0f,p.roll_lim,PID_MODE_DERIVATIV_NONE); + initialized = true; + } - /* load new parameters with lower rate */ - if (counter % 100 == 0) { - /* update parameters from storage */ - parameters_update(&h, &p); + /* load new parameters with lower rate */ + if (counter % 100 == 0) { + /* update parameters from storage */ + parameters_update(&h, &p); + pid_set_parameters(&heading_controller, p.heading_p, 0, 0, 0, p.roll_lim); - } + } + + /* Check if there is a new position or setpoint */ + bool pos_updated; + orb_check(global_pos_sub, &pos_updated); + bool global_sp_updated; + orb_check(global_setpoint_sub, &global_sp_updated); + + + /* Load local copies */ + orb_copy(ORB_ID(vehicle_attitude), att_sub, &att); + if(pos_updated) + orb_copy(ORB_ID(vehicle_global_position), global_pos_sub, &global_pos); + if (global_sp_updated) + orb_copy(ORB_ID(vehicle_global_position_setpoint), global_setpoint_sub, &global_setpoint); + + /* Control */ - /* Control */ - //TODO: control here + /* Simple Horizontal Control */ + /* calculate bearing error */ + float target_bearing = get_bearing_to_next_waypoint(global_pos.lat / (double)1e7d, global_pos.lon / (double)1e7d, + global_setpoint.lat / (double)1e7d, global_setpoint.lon / (double)1e7d); + + /* shift error to prevent wrapping issues */ + float bearing_error = target_bearing - att.yaw; + + if (bearing_error < M_PI_F) { + bearing_error += 2.0f * M_PI_F; + } + + if (bearing_error > M_PI_F) { + bearing_error -= 2.0f * M_PI_F; + } + /* calculate roll setpoint, do this artificially around zero */ + attitude_setpoint.roll_tait_bryan = pid_calculate(&heading_controller, bearing_error, 0.0f, 0.0f, 0.0f); orb_publish(ORB_ID(vehicle_attitude_setpoint), attitude_setpoint_pub, &attitude_setpoint); |