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author | Anton Babushkin <anton.babushkin@me.com> | 2013-05-17 12:23:48 +0400 |
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committer | Anton Babushkin <anton.babushkin@me.com> | 2013-05-17 12:23:48 +0400 |
commit | eb2fc4e036e2a79228dd57e74de00828d5a4d950 (patch) | |
tree | 5cdcb80c0e1660928e5c72cf69fe81397d471dd6 /src/modules/multirotor_pos_control | |
parent | 861a21ef7559386d8301c6b8860a13ac2fc0ef64 (diff) | |
parent | fa816d0fd65da461fd5bf8803cf00caebaf23c5c (diff) | |
download | px4-firmware-eb2fc4e036e2a79228dd57e74de00828d5a4d950.tar.gz px4-firmware-eb2fc4e036e2a79228dd57e74de00828d5a4d950.tar.bz2 px4-firmware-eb2fc4e036e2a79228dd57e74de00828d5a4d950.zip |
Merge branch 'master' into seatbelt_multirotor
Diffstat (limited to 'src/modules/multirotor_pos_control')
6 files changed, 796 insertions, 0 deletions
diff --git a/src/modules/multirotor_pos_control/module.mk b/src/modules/multirotor_pos_control/module.mk new file mode 100644 index 000000000..d04847745 --- /dev/null +++ b/src/modules/multirotor_pos_control/module.mk @@ -0,0 +1,41 @@ +############################################################################ +# +# Copyright (c) 2012, 2013 PX4 Development Team. All rights reserved. +# +# 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. +# +############################################################################ + +# +# Build multirotor position control +# + +MODULE_COMMAND = multirotor_pos_control + +SRCS = multirotor_pos_control.c \ + multirotor_pos_control_params.c diff --git a/src/modules/multirotor_pos_control/multirotor_pos_control.c b/src/modules/multirotor_pos_control/multirotor_pos_control.c new file mode 100644 index 000000000..6fe129d84 --- /dev/null +++ b/src/modules/multirotor_pos_control/multirotor_pos_control.c @@ -0,0 +1,325 @@ +/**************************************************************************** + * + * Copyright (C) 2013 Anton Babushkin. All rights reserved. + * Author: Anton Babushkin <rk3dov@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 multirotor_pos_control.c + * + * Multirotor position controller + */ + +#include <nuttx/config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdbool.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <debug.h> +#include <termios.h> +#include <time.h> +#include <sys/prctl.h> +#include <drivers/drv_hrt.h> +#include <uORB/uORB.h> +#include <uORB/topics/parameter_update.h> +#include <uORB/topics/vehicle_status.h> +#include <uORB/topics/vehicle_attitude.h> +#include <uORB/topics/manual_control_setpoint.h> +#include <uORB/topics/vehicle_attitude_setpoint.h> +#include <uORB/topics/vehicle_local_position.h> +#include <uORB/topics/vehicle_local_position_setpoint.h> +#include <uORB/topics/vehicle_vicon_position.h> +#include <systemlib/systemlib.h> +#include <mavlink/mavlink_log.h> + +#include "multirotor_pos_control_params.h" + + +static bool thread_should_exit = false; /**< Deamon exit flag */ +static bool thread_running = false; /**< Deamon status flag */ +static int deamon_task; /**< Handle of deamon task / thread */ + +__EXPORT int multirotor_pos_control_main(int argc, char *argv[]); + +/** + * Mainloop of position controller. + */ +static int multirotor_pos_control_thread_main(int argc, char *argv[]); + +/** + * Print the correct usage. + */ +static void usage(const char *reason); + +static void usage(const char *reason) { + if (reason) + fprintf(stderr, "%s\n", reason); + fprintf(stderr, "usage: deamon {start|stop|status} [-p <additional params>]\n\n"); + exit(1); +} + +/** + * The deamon app only briefly exists to start + * the background job. The stack size assigned in the + * Makefile does only apply to this management task. + * + * The actual stack size should be set in the call + * to task_spawn(). + */ +int multirotor_pos_control_main(int argc, char *argv[]) { + if (argc < 1) + usage("missing command"); + + if (!strcmp(argv[1], "start")) { + + if (thread_running) { + printf("multirotor_pos_control already running\n"); + /* this is not an error */ + exit(0); + } + + thread_should_exit = false; + deamon_task = task_spawn("multirotor_pos_control", + SCHED_DEFAULT, + SCHED_PRIORITY_MAX - 60, + 4096, + multirotor_pos_control_thread_main, + (argv) ? (const char **)&argv[2] : (const char **)NULL); + exit(0); + } + + if (!strcmp(argv[1], "stop")) { + thread_should_exit = true; + exit(0); + } + + if (!strcmp(argv[1], "status")) { + if (thread_running) { + printf("\tmultirotor_pos_control app is running\n"); + } else { + printf("\tmultirotor_pos_control app not started\n"); + } + exit(0); + } + + usage("unrecognized command"); + exit(1); +} + +static int multirotor_pos_control_thread_main(int argc, char *argv[]) { + /* welcome user */ + printf("[multirotor_pos_control] started\n"); + static int mavlink_fd; + mavlink_fd = open(MAVLINK_LOG_DEVICE, 0); + mavlink_log_info(mavlink_fd, "[multirotor_pos_control] started"); + + /* structures */ + struct vehicle_status_s status; + memset(&status, 0, sizeof(status)); + struct vehicle_attitude_s att; + memset(&att, 0, sizeof(att)); + struct vehicle_attitude_setpoint_s att_sp; + memset(&att_sp, 0, sizeof(att_sp)); + struct manual_control_setpoint_s manual; + memset(&manual, 0, sizeof(manual)); + struct vehicle_local_position_s local_pos; + memset(&local_pos, 0, sizeof(local_pos)); + struct vehicle_local_position_setpoint_s local_pos_sp; + memset(&local_pos_sp, 0, sizeof(local_pos_sp)); + + /* subscribe to attitude, motor setpoints and system state */ + int param_sub = orb_subscribe(ORB_ID(parameter_update)); + int state_sub = orb_subscribe(ORB_ID(vehicle_status)); + int att_sub = orb_subscribe(ORB_ID(vehicle_attitude)); + int att_sp_sub = orb_subscribe(ORB_ID(vehicle_attitude_setpoint)); + int manual_sub = orb_subscribe(ORB_ID(manual_control_setpoint)); + int local_pos_sp_sub = orb_subscribe(ORB_ID(vehicle_local_position_setpoint)); + int local_pos_sub = orb_subscribe(ORB_ID(vehicle_local_position)); + + /* publish setpoint */ + orb_advert_t local_pos_sp_pub = orb_advertise(ORB_ID(vehicle_local_position_setpoint), &local_pos_sp); + orb_advert_t att_sp_pub = orb_advertise(ORB_ID(vehicle_attitude_setpoint), &att_sp); + + bool reset_sp_alt = true; + bool reset_sp_pos = true; + hrt_abstime t_prev = 0; + float alt_integral = 0.0f; + float alt_ctl_dz = 0.2f; + + thread_running = true; + + struct multirotor_position_control_params params; + struct multirotor_position_control_param_handles params_h; + parameters_init(¶ms_h); + parameters_update(¶ms_h, ¶ms); + + int paramcheck_counter = 0; + + while (!thread_should_exit) { + orb_copy(ORB_ID(vehicle_status), state_sub, &status); + + /* check parameters at 1 Hz*/ + paramcheck_counter++; + if (paramcheck_counter == 50) { + bool param_updated; + orb_check(param_sub, ¶m_updated); + if (param_updated) { + parameters_update(¶ms_h, ¶ms); + } + paramcheck_counter = 0; + } + + /* Check if controller should act */ + bool act = status.flag_system_armed && ( + /* SAS modes */ + ( + status.flag_control_manual_enabled && + status.manual_control_mode == VEHICLE_MANUAL_CONTROL_MODE_SAS && ( + status.manual_sas_mode == VEHICLE_MANUAL_SAS_MODE_ALTITUDE || + status.manual_sas_mode == VEHICLE_MANUAL_SAS_MODE_SIMPLE + ) + ) || + /* AUTO mode */ + status.state_machine == SYSTEM_STATE_AUTO + ); + + hrt_abstime t = hrt_absolute_time(); + float dt; + if (t_prev != 0) { + dt = (t - t_prev) * 0.000001f; + } else { + dt = 0.0f; + } + t_prev = t; + if (act) { + orb_copy(ORB_ID(manual_control_setpoint), manual_sub, &manual); + orb_copy(ORB_ID(vehicle_attitude), att_sub, &att); + orb_copy(ORB_ID(vehicle_attitude_setpoint), att_sp_sub, &att_sp); + orb_copy(ORB_ID(vehicle_local_position), local_pos_sub, &local_pos); + if (status.state_machine == SYSTEM_STATE_AUTO) { + orb_copy(ORB_ID(vehicle_local_position_setpoint), local_pos_sp_sub, &local_pos_sp); + } + + if (reset_sp_alt) { + reset_sp_alt = false; + local_pos_sp.z = local_pos.z; + alt_integral = manual.throttle; + char str[80]; + sprintf(str, "reset alt setpoint: z = %.2f, throttle = %.2f", local_pos_sp.z, manual.throttle); + mavlink_log_info(mavlink_fd, str); + } + + if (status.manual_sas_mode == VEHICLE_MANUAL_SAS_MODE_SIMPLE && reset_sp_pos) { + reset_sp_pos = false; + local_pos_sp.x = local_pos.x; + local_pos_sp.y = local_pos.y; + char str[80]; + sprintf(str, "reset pos setpoint: x = %.2f, y = %.2f", local_pos_sp.x, local_pos_sp.y); + mavlink_log_info(mavlink_fd, str); + } + + float err_linear_limit = params.alt_d / params.alt_p * params.alt_rate_max; + + if (status.flag_control_manual_enabled) { + /* move altitude setpoint with manual controls */ + float alt_ctl = manual.throttle - 0.5f; + if (fabs(alt_ctl) < alt_ctl_dz) { + alt_ctl = 0.0f; + } else { + if (alt_ctl > 0.0f) + alt_ctl = (alt_ctl - alt_ctl_dz) / (0.5f - alt_ctl_dz); + else + alt_ctl = (alt_ctl + alt_ctl_dz) / (0.5f - alt_ctl_dz); + local_pos_sp.z -= alt_ctl * params.alt_rate_max * dt; + if (local_pos_sp.z > local_pos.z + err_linear_limit) + local_pos_sp.z = local_pos.z + err_linear_limit; + else if (local_pos_sp.z < local_pos.z - err_linear_limit) + local_pos_sp.z = local_pos.z - err_linear_limit; + } + + if (status.manual_sas_mode == VEHICLE_MANUAL_SAS_MODE_SIMPLE) { + // TODO move position setpoint with manual controls + } + } + + /* PID for altitude */ + float alt_err = local_pos.z - local_pos_sp.z; + /* don't accelerate more than ALT_RATE_MAX, limit error to corresponding value */ + if (alt_err > err_linear_limit) { + alt_err = err_linear_limit; + } else if (alt_err < -err_linear_limit) { + alt_err = -err_linear_limit; + } + /* P and D components */ + float thrust_ctl_pd = alt_err * params.alt_p + local_pos.vz * params.alt_d; + /* add I component */ + float thrust_ctl = thrust_ctl_pd + alt_integral; + alt_integral += thrust_ctl_pd / params.alt_p * params.alt_i * dt; + if (thrust_ctl < params.thr_min) { + thrust_ctl = params.thr_min; + } else if (thrust_ctl > params.thr_max) { + thrust_ctl = params.thr_max; + } + if (status.manual_sas_mode == VEHICLE_MANUAL_SAS_MODE_SIMPLE || status.state_machine == SYSTEM_STATE_AUTO) { + // TODO add position controller + } else { + reset_sp_pos = true; + } + att_sp.thrust = thrust_ctl; + att_sp.timestamp = hrt_absolute_time(); + if (status.flag_control_manual_enabled) { + /* publish local position setpoint in manual mode */ + orb_publish(ORB_ID(vehicle_local_position_setpoint), local_pos_sp_pub, &local_pos_sp); + } + /* publish new attitude setpoint */ + orb_publish(ORB_ID(vehicle_attitude_setpoint), att_sp_pub, &att_sp); + } else { + reset_sp_alt = true; + reset_sp_pos = true; + } + + /* run at approximately 50 Hz */ + usleep(20000); + + } + + printf("[multirotor_pos_control] exiting\n"); + mavlink_log_info(mavlink_fd, "[multirotor_pos_control] exiting"); + + thread_running = false; + + fflush(stdout); + return 0; +} + diff --git a/src/modules/multirotor_pos_control/multirotor_pos_control_params.c b/src/modules/multirotor_pos_control/multirotor_pos_control_params.c new file mode 100644 index 000000000..90dd820f4 --- /dev/null +++ b/src/modules/multirotor_pos_control/multirotor_pos_control_params.c @@ -0,0 +1,73 @@ +/**************************************************************************** + * + * Copyright (C) 2012 PX4 Development Team. All rights reserved. + * Author: Tobias Naegeli <naegelit@student.ethz.ch> + * Lorenz Meier <lm@inf.ethz.ch> + * + * 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 multirotor_pos_control_params.c + * + * Parameters for multirotor_pos_control + */ + +#include "multirotor_pos_control_params.h" + +/* controller parameters */ +PARAM_DEFINE_FLOAT(MPC_THR_MIN, 0.3f); +PARAM_DEFINE_FLOAT(MPC_THR_MAX, 0.7f); +PARAM_DEFINE_FLOAT(MPC_ALT_P, 0.1f); +PARAM_DEFINE_FLOAT(MPC_ALT_I, 0.01f); +PARAM_DEFINE_FLOAT(MPC_ALT_D, 0.2f); +PARAM_DEFINE_FLOAT(MPC_ALT_RATE_MAX, 3.0f); + +int parameters_init(struct multirotor_position_control_param_handles *h) +{ + h->thr_min = param_find("MPC_THR_MIN"); + h->thr_max = param_find("MPC_THR_MAX"); + /* PID parameters */ + h->alt_p = param_find("MPC_ALT_P"); + h->alt_i = param_find("MPC_ALT_I"); + h->alt_d = param_find("MPC_ALT_D"); + h->alt_rate_max = param_find("MPC_ALT_RATE_MAX"); + return OK; +} + +int parameters_update(const struct multirotor_position_control_param_handles *h, struct multirotor_position_control_params *p) +{ + param_get(h->thr_min, &(p->thr_min)); + param_get(h->thr_max, &(p->thr_max)); + param_get(h->alt_p, &(p->alt_p)); + param_get(h->alt_i, &(p->alt_i)); + param_get(h->alt_d, &(p->alt_d)); + param_get(h->alt_rate_max, &(p->alt_rate_max)); + return OK; +} diff --git a/src/modules/multirotor_pos_control/multirotor_pos_control_params.h b/src/modules/multirotor_pos_control/multirotor_pos_control_params.h new file mode 100644 index 000000000..849055cd1 --- /dev/null +++ b/src/modules/multirotor_pos_control/multirotor_pos_control_params.h @@ -0,0 +1,72 @@ +/**************************************************************************** + * + * Copyright (C) 2012 PX4 Development Team. All rights reserved. + * Author: Tobias Naegeli <naegelit@student.ethz.ch> + * Lorenz Meier <lm@inf.ethz.ch> + * + * 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 multirotor_position_control_params.h + * + * Parameters for position controller + */ + +#include <systemlib/param/param.h> + +struct multirotor_position_control_params { + float thr_min; + float thr_max; + float alt_p; + float alt_i; + float alt_d; + float alt_rate_max; +}; + +struct multirotor_position_control_param_handles { + param_t thr_min; + param_t thr_max; + param_t alt_p; + param_t alt_i; + param_t alt_d; + param_t alt_rate_max; +}; + +/** + * Initialize all parameter handles and values + * + */ +int parameters_init(struct multirotor_position_control_param_handles *h); + +/** + * Update all parameters + * + */ +int parameters_update(const struct multirotor_position_control_param_handles *h, struct multirotor_position_control_params *p); diff --git a/src/modules/multirotor_pos_control/position_control.c b/src/modules/multirotor_pos_control/position_control.c new file mode 100644 index 000000000..9c53a5bf6 --- /dev/null +++ b/src/modules/multirotor_pos_control/position_control.c @@ -0,0 +1,235 @@ +// /**************************************************************************** +// * +// * Copyright (C) 2008-2012 PX4 Development Team. All rights reserved. +// * Author: @author Lorenz Meier <lm@inf.ethz.ch> +// * @author Laurens Mackay <mackayl@student.ethz.ch> +// * @author Tobias Naegeli <naegelit@student.ethz.ch> +// * @author Martin Rutschmann <rutmarti@student.ethz.ch> +// * +// * 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 multirotor_position_control.c +// * Implementation of the position control for a multirotor VTOL +// */ + +// #include <stdio.h> +// #include <stdlib.h> +// #include <stdio.h> +// #include <stdint.h> +// #include <math.h> +// #include <stdbool.h> +// #include <float.h> +// #include <systemlib/pid/pid.h> + +// #include "multirotor_position_control.h" + +// void control_multirotor_position(const struct vehicle_state_s *vstatus, const struct vehicle_manual_control_s *manual, +// const struct vehicle_attitude_s *att, const struct vehicle_local_position_s *local_pos, +// const struct vehicle_local_position_setpoint_s *local_pos_sp, struct vehicle_attitude_setpoint_s *att_sp) +// { +// static PID_t distance_controller; + +// static int read_ret; +// static global_data_position_t position_estimated; + +// static uint16_t counter; + +// static bool initialized; +// static uint16_t pm_counter; + +// static float lat_next; +// static float lon_next; + +// static float pitch_current; + +// static float thrust_total; + + +// if (initialized == false) { + +// pid_init(&distance_controller, +// global_data_parameter_storage->pm.param_values[PARAM_PID_POS_P], +// global_data_parameter_storage->pm.param_values[PARAM_PID_POS_I], +// global_data_parameter_storage->pm.param_values[PARAM_PID_POS_D], +// global_data_parameter_storage->pm.param_values[PARAM_PID_POS_AWU], +// PID_MODE_DERIVATIV_CALC, 150);//150 + +// // pid_pos_lim = global_data_parameter_storage->pm.param_values[PARAM_PID_POS_LIM]; +// // pid_pos_z_lim = global_data_parameter_storage->pm.param_values[PARAM_PID_POS_Z_LIM]; + +// thrust_total = 0.0f; + +// /* Position initialization */ +// /* Wait for new position estimate */ +// do { +// read_ret = read_lock_position(&position_estimated); +// } while (read_ret != 0); + +// lat_next = position_estimated.lat; +// lon_next = position_estimated.lon; + +// /* attitude initialization */ +// global_data_lock(&global_data_attitude->access_conf); +// pitch_current = global_data_attitude->pitch; +// global_data_unlock(&global_data_attitude->access_conf); + +// initialized = true; +// } + +// /* load new parameters with 10Hz */ +// if (counter % 50 == 0) { +// if (global_data_trylock(&global_data_parameter_storage->access_conf) == 0) { +// /* check whether new parameters are available */ +// if (global_data_parameter_storage->counter > pm_counter) { +// pid_set_parameters(&distance_controller, +// global_data_parameter_storage->pm.param_values[PARAM_PID_POS_P], +// global_data_parameter_storage->pm.param_values[PARAM_PID_POS_I], +// global_data_parameter_storage->pm.param_values[PARAM_PID_POS_D], +// global_data_parameter_storage->pm.param_values[PARAM_PID_POS_AWU]); + +// // +// // pid_pos_lim = global_data_parameter_storage->pm.param_values[PARAM_PID_POS_LIM]; +// // pid_pos_z_lim = global_data_parameter_storage->pm.param_values[PARAM_PID_POS_Z_LIM]; + +// pm_counter = global_data_parameter_storage->counter; +// printf("Position controller changed pid parameters\n"); +// } +// } + +// global_data_unlock(&global_data_parameter_storage->access_conf); +// } + + +// /* Wait for new position estimate */ +// do { +// read_ret = read_lock_position(&position_estimated); +// } while (read_ret != 0); + +// /* Get next waypoint */ //TODO: add local copy + +// if (0 == global_data_trylock(&global_data_position_setpoint->access_conf)) { +// lat_next = global_data_position_setpoint->x; +// lon_next = global_data_position_setpoint->y; +// global_data_unlock(&global_data_position_setpoint->access_conf); +// } + +// /* Get distance to waypoint */ +// float distance_to_waypoint = get_distance_to_next_waypoint(position_estimated.lat , position_estimated.lon, lat_next, lon_next); +// // if(counter % 5 == 0) +// // printf("distance_to_waypoint: %.4f\n", distance_to_waypoint); + +// /* Get bearing to waypoint (direction on earth surface to next waypoint) */ +// float bearing = get_bearing_to_next_waypoint(position_estimated.lat, position_estimated.lon, lat_next, lon_next); + +// if (counter % 5 == 0) +// printf("bearing: %.4f\n", bearing); + +// /* Calculate speed in direction of bearing (needed for controller) */ +// float speed_norm = sqrtf(position_estimated.vx * position_estimated.vx + position_estimated.vy * position_estimated.vy); +// // if(counter % 5 == 0) +// // printf("speed_norm: %.4f\n", speed_norm); +// float speed_to_waypoint = 0; //(position_estimated.vx * cosf(bearing) + position_estimated.vy * sinf(bearing))/speed_norm; //FIXME, TODO: re-enable this once we have a full estimate of the speed, then we can do a PID for the distance controller + +// /* Control Thrust in bearing direction */ +// float horizontal_thrust = -pid_calculate(&distance_controller, 0, distance_to_waypoint, speed_to_waypoint, +// CONTROL_PID_POSITION_INTERVAL); //TODO: maybe this "-" sign is an error somewhere else + +// // if(counter % 5 == 0) +// // printf("horizontal thrust: %.4f\n", horizontal_thrust); + +// /* Get total thrust (from remote for now) */ +// if (0 == global_data_trylock(&global_data_rc_channels->access_conf)) { +// thrust_total = (float)global_data_rc_channels->chan[THROTTLE].scale; //TODO: how should we use the RC_CHANNELS_FUNCTION enum? +// global_data_unlock(&global_data_rc_channels->access_conf); +// } + +// const float max_gas = 500.0f; +// thrust_total *= max_gas / 20000.0f; //TODO: check this +// thrust_total += max_gas / 2.0f; + + +// if (horizontal_thrust > thrust_total) { +// horizontal_thrust = thrust_total; + +// } else if (horizontal_thrust < -thrust_total) { +// horizontal_thrust = -thrust_total; +// } + + + +// //TODO: maybe we want to add a speed controller later... + +// /* Calclulate thrust in east and north direction */ +// float thrust_north = cosf(bearing) * horizontal_thrust; +// float thrust_east = sinf(bearing) * horizontal_thrust; + +// if (counter % 10 == 0) { +// printf("thrust north: %.4f\n", thrust_north); +// printf("thrust east: %.4f\n", thrust_east); +// fflush(stdout); +// } + +// /* Get current attitude */ +// if (0 == global_data_trylock(&global_data_attitude->access_conf)) { +// pitch_current = global_data_attitude->pitch; +// global_data_unlock(&global_data_attitude->access_conf); +// } + +// /* Get desired pitch & roll */ +// float pitch_desired = 0.0f; +// float roll_desired = 0.0f; + +// if (thrust_total != 0) { +// float pitch_fraction = -thrust_north / thrust_total; +// float roll_fraction = thrust_east / (cosf(pitch_current) * thrust_total); + +// if (roll_fraction < -1) { +// roll_fraction = -1; + +// } else if (roll_fraction > 1) { +// roll_fraction = 1; +// } + +// // if(counter % 5 == 0) +// // { +// // printf("pitch_fraction: %.4f, roll_fraction: %.4f\n",pitch_fraction, roll_fraction); +// // fflush(stdout); +// // } + +// pitch_desired = asinf(pitch_fraction); +// roll_desired = asinf(roll_fraction); +// } + +// att_sp.roll = roll_desired; +// att_sp.pitch = pitch_desired; + +// counter++; +// } diff --git a/src/modules/multirotor_pos_control/position_control.h b/src/modules/multirotor_pos_control/position_control.h new file mode 100644 index 000000000..2144ebc34 --- /dev/null +++ b/src/modules/multirotor_pos_control/position_control.h @@ -0,0 +1,50 @@ +/**************************************************************************** + * + * Copyright (C) 2008-2012 PX4 Development Team. All rights reserved. + * Author: @author Lorenz Meier <lm@inf.ethz.ch> + * @author Laurens Mackay <mackayl@student.ethz.ch> + * @author Tobias Naegeli <naegelit@student.ethz.ch> + * @author Martin Rutschmann <rutmarti@student.ethz.ch> + * + * 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 multirotor_position_control.h + * Definition of the position control for a multirotor VTOL + */ + +// #ifndef POSITION_CONTROL_H_ +// #define POSITION_CONTROL_H_ + +// void control_multirotor_position(const struct vehicle_state_s *vstatus, const struct vehicle_manual_control_s *manual, +// const struct vehicle_attitude_s *att, const struct vehicle_local_position_s *local_pos, +// const struct vehicle_local_position_setpoint_s *local_pos_sp, struct vehicle_attitude_setpoint_s *att_sp); + +// #endif /* POSITION_CONTROL_H_ */ |