mirror of
https://gitee.com/dlmu-cone/bf_original_balance_chassis
synced 2026-07-24 03:27:45 +08:00
412 lines
15 KiB
C
412 lines
15 KiB
C
// app
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#include "balance.h"
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#include "linkNleg.h"
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#include "robot_def.h"
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#include "general_def.h"
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#include "ins_task.h"
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#include "HT04.h"
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#include "LK9025.h"
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#include "controller.h"
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#include "can_comm.h"
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#include "super_cap.h"
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#include "user_lib.h"
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#include "remote_control.h"
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#include "referee_task.h"
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#include "stdint.h"
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#include "arm_math.h" // 需要用到较多三角函数
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#include "bsp_dwt.h"
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#include "bsp_log.h"
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#include "lqr_calc.h"
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#include "speed_estimation.h"
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// 计时变量
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static uint32_t balance_dwt_cnt;
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static float del_t;
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// 底盘拥有的实例模块
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static INS_t *Chassis_IMU_data;
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static RC_ctrl_t *rc_data; // 底盘单独调试用
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static Chassis_Ctrl_Cmd_s chassis_cmd_recv;
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// 四个关节电机和两个驱动轮电机
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static HTMotorInstance *lf, *lb, *rf, *rb, *joint[4]; // 指针数组方便传参和调试
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static LKMotorInstance *l_driven, *r_driven, *driven[2];
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// 两个腿的参数,0为左腿,1为右腿
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static LinkNPodParam l_side, r_side;
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static ChassisParam chassis;
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// 综合运动补偿的PID控制器
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static PIDInstance leglen_pid_l, leglen_pid_r; // 用PD模拟弹簧, 不要积分(弹簧是无积分二阶系统), 增益不可过大否则抗外界冲击响应时太"硬"
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static PIDInstance roll_compensate_pid; // roll轴补偿,用于保持机体水平
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static PIDInstance steer_p_pid, steer_v_pid; // 转向PID,有转向指令时使用IMU的加速度反馈积分以获取速度和位置状态量
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static PIDInstance anti_crash_pid; // 抗劈叉,将输出以相反的方向叠加到左右腿的上
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// 底盘状态
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static Robot_Status_e chassis_status;
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void BalanceInit()
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{
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rc_data = RemoteControlInit(&huart3);
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Chassis_IMU_data = INS_Init();
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// 关节电机
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Motor_Init_Config_s joint_conf = {
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// 写一个,剩下的修改方向和id即可
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.can_init_config = {
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.can_handle = &hcan1},
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.controller_param_init_config = {
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.angle_PID = {
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.Kp = 0.3,
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.Kd = 0,
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.Ki = 0,
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.DeadBand = 0.0001,
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.Improve = PID_DerivativeFilter | PID_Derivative_On_Measurement,
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.MaxOut = 4,
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.Derivative_LPF_RC = 0.05,
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}, // 仅用于复位腿
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},
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.controller_setting_init_config = {
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.close_loop_type = ANGLE_LOOP,
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.outer_loop_type = OPEN_LOOP,
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.motor_reverse_flag = FEEDBACK_DIRECTION_NORMAL,
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.angle_feedback_source = MOTOR_FEED,
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.speed_feedback_source = MOTOR_FEED,
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},
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.motor_type = HT04};
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joint_conf.can_init_config.tx_id = 1;
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joint_conf.can_init_config.rx_id = 11;
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joint[LF] = lf = HTMotorInit(&joint_conf);
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joint_conf.can_init_config.tx_id = 2;
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joint_conf.can_init_config.rx_id = 12;
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joint[LB] = lb = HTMotorInit(&joint_conf);
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joint_conf.can_init_config.tx_id = 3;
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joint_conf.can_init_config.rx_id = 13;
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joint[RF] = rf = HTMotorInit(&joint_conf);
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joint_conf.can_init_config.tx_id = 4;
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joint_conf.can_init_config.rx_id = 14;
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joint[RB] = rb = HTMotorInit(&joint_conf);
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// 驱动轮电机
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Motor_Init_Config_s driven_conf = {
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// 写一个,剩下的修改方向和id即可
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.can_init_config.can_handle = &hcan2,
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.controller_setting_init_config = {
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.angle_feedback_source = MOTOR_FEED,
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.speed_feedback_source = MOTOR_FEED,
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.outer_loop_type = OPEN_LOOP,
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.close_loop_type = OPEN_LOOP,
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.motor_reverse_flag = MOTOR_DIRECTION_NORMAL,
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},
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.motor_type = LK9025,
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};
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driven_conf.can_init_config.tx_id = 1;
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driven[RD] = r_driven = LKMotorInit(&driven_conf);
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driven_conf.can_init_config.tx_id = 2;
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driven[LD] = l_driven = LKMotorInit(&driven_conf);
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// 腿长控制
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PID_Init_Config_s leg_length_pid_conf = {
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.Kp = 600,
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.Kd = 200,
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.Ki = 0,
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.MaxOut = 20,
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.DeadBand = 0.0001f,
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.Improve = PID_ChangingIntegrationRate | PID_Trapezoid_Intergral | PID_DerivativeFilter | PID_Derivative_On_Measurement,
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.Derivative_LPF_RC = 0.05,
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};
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PIDInit(&leglen_pid_l, &leg_length_pid_conf);
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PIDInit(&leglen_pid_r, &leg_length_pid_conf);
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// roll轴补偿
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PID_Init_Config_s roll_compensate_pid_conf = {
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.Kp = 0.0006f,
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.Kd = 0.00005f,
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.Ki = 0.0f,
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.MaxOut = 0.04,
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.DeadBand = 0.001f,
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.Improve = PID_DerivativeFilter | PID_Derivative_On_Measurement,
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.Derivative_LPF_RC = 0.05,
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};
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PIDInit(&roll_compensate_pid, &roll_compensate_pid_conf);
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// 航向控制
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// 角度环
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PID_Init_Config_s steer_p_pid_conf = {
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.Kp = 5,
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.Kd = 0,
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.Ki = 0.0f,
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.MaxOut = 4,
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.DeadBand = 0.001f,
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.Improve = PID_DerivativeFilter | PID_Derivative_On_Measurement,
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.Derivative_LPF_RC = 0.05,
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};
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PIDInit(&steer_p_pid, &steer_p_pid_conf);
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// 速度环
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PID_Init_Config_s steer_v_pid_conf = {
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.Kp = 3,
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.Kd = 0.0f,
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.Ki = 0.0f,
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.MaxOut = 10,
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.DeadBand = 0.0f,
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.Improve = PID_DerivativeFilter | PID_Derivative_On_Measurement,
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.Derivative_LPF_RC = 0.05,
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};
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PIDInit(&steer_v_pid, &steer_v_pid_conf);
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// 抗劈叉
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PID_Init_Config_s anti_crash_pid_conf = {
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.Kp = 8,
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.Kd = 2.5,
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.Ki = 0.0,
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.MaxOut = 10,
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.DeadBand = 0.001f,
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.Improve = PID_DerivativeFilter | PID_ChangingIntegrationRate | PID_Integral_Limit,
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.Derivative_LPF_RC = 0.01,
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};
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PIDInit(&anti_crash_pid, &anti_crash_pid_conf);
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// 状态初始化
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l_side.target_len = r_side.target_len = 0.12;
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chassis.vel_cov = 100; // 速度协方差初始化
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chassis_status = ROBOT_READY;
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DWT_GetDeltaT(&balance_dwt_cnt);
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}
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static void EnableAllMotor() /* 打开所有电机 */
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{
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for (uint8_t i = 0; i < JOINT_CNT; i++) // 打开关节电机
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HTMotorEnable(joint[i]);
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for (uint8_t i = 0; i < DRIVEN_CNT; i++) // 打开驱动电机
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LKMotorEnable(driven[i]);
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}
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/* 切换底盘遥控器控制和云台双板控制 */
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static void ControlSwitch()
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{
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// 右侧拨杆向下,进入遥控器底盘控制,此时不响应云台控制指令
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if (switch_is_down(rc_data->rc.switch_right) && RemoteControlIsOnline())
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{
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if (switch_is_up(rc_data->rc.switch_left))
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{
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chassis_cmd_recv.chassis_mode = CHASSIS_RESET;
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chassis_cmd_recv.vx = 0.5 * (float)rc_data[TEMP].rc.rocker_r1; // speed x, unit m/s
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chassis_cmd_recv.rotate_w = 0.5 * (float)rc_data[TEMP].rc.rocker_r_;
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}
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else
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{
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chassis_cmd_recv.chassis_mode = CHASSIS_FREE_DEBUG; // 自由转动&前后
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chassis_cmd_recv.vx = 0.002 * (float)rc_data[TEMP].rc.rocker_r1; // speed x, unit m/s
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chassis_cmd_recv.delta_leglen = -0.000001f * (float)rc_data[TEMP].rc.dial;
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chassis_cmd_recv.offset_angle -= 0.000005 * (float)rc_data[TEMP].rc.rocker_r_;
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}
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}
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else
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chassis_cmd_recv.chassis_mode = CHASSIS_ZERO_FORCE; // 皆离线,急停
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}
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/* 腿缩回复位,只允许驱动轮电机移动 */
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static void ResetChassis()
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{
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EnableAllMotor(); // 打开全部电机,关节复位到起始角度,驱动电机响应速度输入以从墙角或固连中脱身
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// 复位时清空距离和腿长积累量,保证顺利站起
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chassis.dist = chassis.target_dist = 0;
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l_side.target_len = r_side.target_len = 0.12;
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// 角度输入为当前角度
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chassis_cmd_recv.offset_angle = chassis.target_yaw = chassis.yaw;
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// 撞墙时前后移动保证能重新站立,执行速度输入
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LKMotorSetRef(l_driven, chassis_cmd_recv.vx + chassis_cmd_recv.rotate_w);
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LKMotorSetRef(r_driven, -chassis_cmd_recv.vx + chassis_cmd_recv.rotate_w);
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// 若关节完成复位,进入ready态
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if (abs(lf->measure.total_angle) < 0.05 && abs(lf->measure.total_angle) > 0.025 &&
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abs(lb->measure.total_angle) < 0.05 && abs(lb->measure.total_angle) > 0.025 &&
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abs(rf->measure.total_angle) < 0.05 && abs(rf->measure.total_angle) > 0.025 &&
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abs(rb->measure.total_angle) < 0.05 && abs(rb->measure.total_angle) > 0.025)
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{
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chassis_status = ROBOT_READY; // 底盘已经准备好重新站立
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}
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else if (abs(lf->measure.total_angle) <= 0.025 &&
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abs(lb->measure.total_angle) <= 0.025 &&
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abs(rf->measure.total_angle) <= 0.025 &&
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abs(rb->measure.total_angle) <= 0.025)
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{ // 双阈值保证关节能够复位而不会进入死区
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chassis_status = ROBOT_READY; // 底盘已经准备好重新站立
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for (uint8_t i = 0; i < JOINT_CNT; i++)
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HTMotorOuterLoop(joint[i], OPEN_LOOP); // 改回直接开环扭矩输入,让电调对扭矩闭环
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return; // 退出函数不再执行关节指令
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}
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else
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chassis_status = ROBOT_STOP;
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// 还在复位中,关节改为位置环,执行复位
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for (uint8_t i = 0; i < JOINT_CNT; i++)
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{
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HTMotorOuterLoop(joint[i], ANGLE_LOOP);
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HTMotorSetRef(joint[i], 0);
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}
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}
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// 工作状态设定
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static void WokingStateSet()
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{
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if (chassis_cmd_recv.chassis_mode == CHASSIS_RESET) // 复位模式
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{
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ResetChassis();
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return;
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}
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else if (chassis_cmd_recv.chassis_mode == CHASSIS_ZERO_FORCE) // 未收到遥控器和云台指令底盘进入急停
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{
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// 清空腿长和距离
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l_side.target_len = r_side.target_len = 0.12;
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chassis.dist = chassis.target_dist = 0;
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// 角度输入为当前角度
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chassis_cmd_recv.offset_angle = chassis.target_yaw = chassis.yaw;
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for (uint8_t i = 0; i < JOINT_CNT; i++)
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HTMotorStop(joint[i]);
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for (uint8_t i = 0; i < DRIVEN_CNT; i++)
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LKMotorStop(driven[i]);
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return; // 关闭所有电机,发送的指令为零
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}
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// 运动模式
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EnableAllMotor();
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// 设置目标速度/腿长/距离
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l_side.target_len += chassis_cmd_recv.delta_leglen;
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r_side.target_len += chassis_cmd_recv.delta_leglen;
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// 腿长限幅
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VAL_LIMIT(l_side.target_len, 0.12, 0.25);
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VAL_LIMIT(r_side.target_len, 0.12, 0.25);
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// 加速度限幅,防止键盘控制摔倒
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if (abs(chassis_cmd_recv.vx - chassis.target_v) / del_t < MAX_ACC_REF)
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chassis.target_v = chassis_cmd_recv.vx;
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else
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chassis.target_v += sign(chassis_cmd_recv.vx - chassis.target_v) * MAX_ACC_REF * del_t;
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// 模型距离参考输入
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chassis.target_dist += chassis.target_v * del_t;
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// 角度输入
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chassis.target_yaw = chassis_cmd_recv.offset_angle;
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}
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/**
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* @brief 将电机和imu的数据组装为LinkNPodParam结构体和chassisParam结构体
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*
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* @note HT04电机上电的编码器位置为零(校准过),请看Link2Pod()的note,以及HT04.c中的电机解码部分
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* @note 海泰04电机顺时针旋转为正; LK9025电机逆时针旋转为正,此处皆需要转换为模型中给定的正方向
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*
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*/
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static void ParamAssemble()
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{
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// 机体参数,视为平面刚体
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chassis.pitch = Chassis_IMU_data->Pitch * DEGREE_2_RAD;
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chassis.pitch_w = Chassis_IMU_data->Gyro[0];
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chassis.yaw = Chassis_IMU_data->YawTotalAngle * DEGREE_2_RAD;
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chassis.wz = Chassis_IMU_data->Gyro[2];
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chassis.roll = Chassis_IMU_data->Roll * DEGREE_2_RAD;
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chassis.roll_w = Chassis_IMU_data->Gyro[1];
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// HT04电机的角度是顺时针为正,LK9025电机的角度是逆时针为正
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l_side.phi1 = PI + LIMIT_LINK_RAD - lb->measure.total_angle;
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l_side.phi1_w = -lb->measure.speed_rads;
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l_side.phi4 = -lf->measure.total_angle - LIMIT_LINK_RAD;
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l_side.phi4_w = -lf->measure.speed_rads;
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l_side.w_ecd = l_driven->measure.speed_rads;
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r_side.phi1 = PI + LIMIT_LINK_RAD + rb->measure.total_angle;
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r_side.phi1_w = rb->measure.speed_rads;
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r_side.phi4 = rf->measure.total_angle - LIMIT_LINK_RAD;
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r_side.phi4_w = rf->measure.speed_rads;
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r_side.w_ecd = -r_driven->measure.speed_rads;
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}
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static void SynthesizeMotion() /* 腿部控制:抗劈叉; 轮子控制:转向 */
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{
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if (chassis_cmd_recv.chassis_mode == CHASSIS_FREE_DEBUG)
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{
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// 双环控制
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float p_ref = PIDCalculate(&steer_p_pid, chassis.yaw, chassis.target_yaw);
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PIDCalculate(&steer_v_pid, chassis.wz, p_ref);
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}
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l_side.T_wheel -= steer_v_pid.Output;
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r_side.T_wheel += steer_v_pid.Output;
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static float swerving_speed_ff, ff_coef = 0;
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swerving_speed_ff = ff_coef * steer_v_pid.Output; // 用于抗劈叉的前馈
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PIDCalculate(&anti_crash_pid, l_side.phi5 - r_side.phi5, 0);
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l_side.T_hip += anti_crash_pid.Output + swerving_speed_ff;
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r_side.T_hip -= anti_crash_pid.Output + swerving_speed_ff;
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}
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static void LegControl() /* 腿长控制和Roll补偿 */
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{
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PIDCalculate(&roll_compensate_pid, chassis.roll, 0);
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l_side.target_len += roll_compensate_pid.Output;
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r_side.target_len -= roll_compensate_pid.Output;
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static float gravity_comp = 57.63;
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static float roll_extra_comp_p = 400;
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float roll_comp = roll_extra_comp_p * chassis.roll;
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l_side.F_leg = PIDCalculate(&leglen_pid_l, l_side.height, l_side.target_len) + gravity_comp - roll_comp;
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r_side.F_leg = PIDCalculate(&leglen_pid_r, r_side.height, r_side.target_len) + gravity_comp + roll_comp;
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}
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static void WattLimitSet() /* 设定运动模态的输出 */
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{
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HTMotorSetRef(lf, 0.2857f * -l_side.T_front); // 根据扭矩常数计算得到的系数
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HTMotorSetRef(lb, 0.2857f * -l_side.T_back);
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HTMotorSetRef(rf, 0.2857f * r_side.T_front);
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HTMotorSetRef(rb, 0.2857f * r_side.T_back);
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LKMotorSetRef(l_driven, 195.3125 * l_side.T_wheel);
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LKMotorSetRef(r_driven, 195.3125 * -r_side.T_wheel);
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}
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void BalanceTask()
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{
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del_t = DWT_GetDeltaT(&balance_dwt_cnt);
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// 切换遥控器控制or云台板控制
|
|
ControlSwitch();
|
|
// 设置目标参数和工作模式
|
|
WokingStateSet();
|
|
// 参数组装
|
|
ParamAssemble();
|
|
|
|
// stop表示复位尚未完成,reset表明还未切换到其他模式,故都不执行运动模态的代码
|
|
if (chassis_status == ROBOT_STOP ||
|
|
chassis_cmd_recv.chassis_mode == CHASSIS_RESET ||
|
|
chassis_cmd_recv.chassis_mode == CHASSIS_ZERO_FORCE)
|
|
return; // 复位模态或急停,直接退出
|
|
|
|
// 将五连杆映射成单杆
|
|
Link2Leg(&l_side, &chassis);
|
|
Link2Leg(&r_side, &chassis);
|
|
// 通过卡尔曼滤波估计机体速度
|
|
SpeedEstimation(&l_side, &r_side, &chassis, Chassis_IMU_data, del_t);
|
|
// 根据单杆计算处的角度和杆长,计算反馈增益
|
|
CalcLQR(&l_side, &chassis);
|
|
CalcLQR(&r_side, &chassis);
|
|
// 转向和抗劈叉
|
|
SynthesizeMotion();
|
|
// 腿长控制,保持机体水平
|
|
LegControl();
|
|
// VMC映射成关节输出
|
|
VMCProject(&l_side);
|
|
VMCProject(&r_side);
|
|
// 运动模态,电机输出映射和限幅
|
|
WattLimitSet();
|
|
} |