/**************************************************************************** * * Copyright (c) 2025 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. * ****************************************************************************/ /** * @file rovercontrol_params.c * * Parameters defined by the rover control lib. */ /** * Yaw stick deadzone * * Percentage of stick input range that will be interpreted as zero around the stick centered value. * * @min 0 * @max 1 * @increment 0.01 * @decimal 2 * @group Rover Rate Control */ PARAM_DEFINE_FLOAT(RO_YAW_STICK_DZ, 0.1f); /** * Yaw rate expo factor * * Exponential factor for tuning the input curve shape. * * 0 Purely linear input curve * 1 Purely cubic input curve * * @min 0 * @max 1 * @decimal 2 * @group Rover Rate Control */ PARAM_DEFINE_FLOAT(RO_YAW_EXPO, 0.f); /** * Yaw rate super expo factor * * "Superexponential" factor for refining the input curve shape tuned using RO_YAW_EXPO. * * 0 Pure Expo function * 0.7 reasonable shape enhancement for intuitive stick feel * 0.95 very strong bent input curve only near maxima have effect * * @min 0 * @max 0.95 * @decimal 2 * @group Rover Rate Control */ PARAM_DEFINE_FLOAT(RO_YAW_SUPEXPO, 0.f); /** * Yaw rate measurement threshold * * The minimum threshold for the yaw rate measurement not to be interpreted as zero. * * @unit deg/s * @min 0 * @max 100 * @increment 0.01 * @decimal 2 * @group Rover Rate Control */ PARAM_DEFINE_FLOAT(RO_YAW_RATE_TH, 3.f); /** * Proportional gain for closed loop yaw rate controller * * @min 0 * @max 100 * @increment 0.01 * @decimal 3 * @group Rover Rate Control */ PARAM_DEFINE_FLOAT(RO_YAW_RATE_P, 0.f); /** * Integral gain for closed loop yaw rate controller * * @min 0 * @max 100 * @increment 0.01 * @decimal 3 * @group Rover Rate Control */ PARAM_DEFINE_FLOAT(RO_YAW_RATE_I, 0.f); /** * Yaw rate limit * * Used to cap yaw rate setpoints and map controller inputs to yaw rate setpoints * in Acro, Stabilized and Position mode. * * @unit deg/s * @min 0 * @max 10000 * @increment 0.01 * @decimal 2 * @group Rover Rate Control */ PARAM_DEFINE_FLOAT(RO_YAW_RATE_LIM, 0.f); /** * Yaw acceleration limit * * Used to cap how quickly the magnitude of yaw rate setpoints can increase. * Set to -1 to disable. * * @unit deg/s^2 * @min -1 * @max 10000 * @increment 0.01 * @decimal 2 * @group Rover Rate Control */ PARAM_DEFINE_FLOAT(RO_YAW_ACCEL_LIM, -1.f); /** * Yaw deceleration limit * * Used to cap how quickly the magnitude of yaw rate setpoints can decrease. * Set to -1 to disable. * * @unit deg/s^2 * @min -1 * @max 10000 * @increment 0.01 * @decimal 2 * @group Rover Rate Control */ PARAM_DEFINE_FLOAT(RO_YAW_DECEL_LIM, -1.f); /** * Yaw rate correction factor * * Multiplicative correction factor for the feedforward mapping of the yaw rate controller. * Increase this value (x > 1) if the measured yaw rate is lower than the setpoint, decrease (0 < x < 1) otherwise. * Note: Tuning this is particularly useful for skid-steered rovers, or rovers with misaligned wheels/steering axes * that cause a lot of friction when turning. * * @min 0.01 * @max 10000 * @increment 0.01 * @decimal 2 * @group Rover Rate Control */ PARAM_DEFINE_FLOAT(RO_YAW_RATE_CORR, 1.f); /** * Proportional gain for closed loop yaw controller * * @min 0 * @max 100 * @increment 0.01 * @decimal 3 * @group Rover Attitude Control */ PARAM_DEFINE_FLOAT(RO_YAW_P, 0.f); /** * Speed the rover drives at maximum throttle * * Used to linearly map speeds [m/s] to throttle values [-1. 1]. * * @min 0 * @max 100 * @unit m/s * @increment 0.01 * @decimal 2 * @group Rover Velocity Control */ PARAM_DEFINE_FLOAT(RO_MAX_THR_SPEED, 0.f); /** * Proportional gain for ground speed controller * * @min 0 * @max 100 * @increment 0.01 * @decimal 2 * @group Rover Velocity Control */ PARAM_DEFINE_FLOAT(RO_SPEED_P, 0.f); /** * Integral gain for ground speed controller * * @min 0 * @max 100 * @increment 0.001 * @decimal 3 * @group Rover Velocity Control */ PARAM_DEFINE_FLOAT(RO_SPEED_I, 0.f); /** * Speed limit * * Used to cap speed setpoints and map controller inputs to speed setpoints in Position mode. * * @unit m/s * @min -1 * @max 100 * @increment 0.01 * @decimal 2 * @group Rover Velocity Control */ PARAM_DEFINE_FLOAT(RO_SPEED_LIM, -1.f); /** * Acceleration limit * * Set to -1 to disable. * For mecanum rovers this limit is used for longitudinal and lateral acceleration. * * @unit m/s^2 * @min -1 * @max 100 * @increment 0.01 * @decimal 2 * @group Rover Velocity Control */ PARAM_DEFINE_FLOAT(RO_ACCEL_LIM, -1.f); /** * Deceleration limit * * Set to -1 to disable. * Note that if it is disabled the rover will not slow down when approaching waypoints in auto modes. * For mecanum rovers this limit is used for longitudinal and lateral deceleration. * * @unit m/s^2 * @min -1 * @max 100 * @increment 0.01 * @decimal 2 * @group Rover Velocity Control */ PARAM_DEFINE_FLOAT(RO_DECEL_LIM, -1.f); /** * Jerk limit * * Set to -1 to disable. * Note that if it is disabled the rover will not slow down when approaching waypoints in auto modes. * For mecanum rovers this limit is used for longitudinal and lateral jerk. * * @unit m/s^3 * @min -1 * @max 100 * @increment 0.01 * @decimal 2 * @group Rover Velocity Control */ PARAM_DEFINE_FLOAT(RO_JERK_LIM, -1.f); /** * Speed measurement threshold * * Set to -1 to disable. * The minimum threshold for the speed measurement not to be interpreted as zero. * * @unit m/s * @min 0 * @max 100 * @increment 0.01 * @decimal 2 * @group Rover Velocity Control */ PARAM_DEFINE_FLOAT(RO_SPEED_TH, 0.1f); /** * Tuning parameter for the speed reduction based on the course error * * Reduced_speed = RO_MAX_THR_SPEED * (1 - normalized_course_error * RO_SPEED_RED) * The normalized course error is the angle between the current course and the bearing setpoint * interpolated from [0, 180] -> [0, 1]. * Higher value -> More speed reduction. * Note: This is also used to calculate the speed at which the vehicle arrives at a waypoint in auto modes. * Set to -1 to disable bearing error based speed reduction. * * @min -1 * @max 100 * @increment 0.01 * @decimal 2 * @group Rover Velocity Control */ PARAM_DEFINE_FLOAT(RO_SPEED_RED, -1.f);