sentry_gimbal_hzz/application/chassis/chassis.c

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/**
* @file chassis.c
* @author NeoZeng neozng1@hnu.edu.cn
* @brief ,robot_cmd的控制命令并根据命令进行运动学解算,
* ,,x正方向;y正方向
*
* @version 0.1
* @date 2022-12-04
*
* @copyright Copyright (c) 2022
*
*/
#include "chassis.h"
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#include "robot_def.h"
#include "dji_motor.h"
#include "super_cap.h"
#include "message_center.h"
#include "referee.h"
#include "general_def.h"
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#include "bsp_dwt.h"
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#include "arm_math.h"
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/* 根据robot_def.h中的macro自动计算的参数 */
#define HALF_WHEEL_BASE (WHEEL_BASE / 2.0f) // 半轴距
#define HALF_TRACK_WIDTH (TRACK_WIDTH / 2.0f) // 半轮距
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#define PERIMETER_WHEEL (RADIUS_WHEEL * 2 * PI) // 轮子周长
/* 底盘应用包含的模块和信息存储,底盘是单例模式,因此不需要为底盘建立单独的结构体 */
#ifdef CHASSIS_BOARD // 如果是底盘板,使用板载IMU获取底盘转动角速度
#include "can_comm.h"
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#include "ins_task.h"
static CANCommInstance *chasiss_can_comm; // 双板通信CAN comm
attitude_t *Chassis_IMU_data;
#endif // CHASSIS_BOARD
#ifdef ONE_BOARD
static Publisher_t *chassis_pub; // 用于发布底盘的数据
static Subscriber_t *chassis_sub; // 用于订阅底盘的控制命令
#endif // !ONE_BOARD
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static Chassis_Ctrl_Cmd_s chassis_cmd_recv; // 底盘接收到的控制命令
static Chassis_Upload_Data_s chassis_feedback_data; // 底盘回传的反馈数据
static referee_info_t *referee_data; // 裁判系统的数据
static SuperCapInstance *cap; // 超级电容
static DJIMotorInstance *motor_lf; // left right forward back
static DJIMotorInstance *motor_rf;
static DJIMotorInstance *motor_lb;
static DJIMotorInstance *motor_rb;
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/* 用于自旋变速策略的时间变量,后续考虑查表加速 */
// static float t;
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/* 私有函数计算的中介变量,设为静态避免参数传递的开销 */
static float chassis_vx, chassis_vy; // 将云台系的速度投影到底盘
static float vt_lf, vt_rf, vt_lb, vt_rb; // 底盘速度解算后的临时输出,待进行限幅
void ChassisInit()
{
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// 四个轮子的参数一样,改tx_id和反转标志位即可
Motor_Init_Config_s chassis_motor_config = {
.can_init_config.can_handle = &hcan1,
.controller_param_init_config = {
.speed_PID = {
.Kp = 10,
.Ki = 0,
.Kd = 0,
.MaxOut = 4000,
},
.current_PID = {
.Kp = 1,
.Ki = 0,
.Kd = 0,
.MaxOut = 4000,
},
},
.controller_setting_init_config = {
.angle_feedback_source = MOTOR_FEED,
.speed_feedback_source = MOTOR_FEED,
.outer_loop_type = SPEED_LOOP,
.close_loop_type = SPEED_LOOP | CURRENT_LOOP,
},
.motor_type = M3508,
};
// @todo: 当前还没有设置电机的正反转,仍然需要手动添加reference的正负号,需要电机module的支持,待修改.
chassis_motor_config.can_init_config.tx_id = 4;
chassis_motor_config.controller_setting_init_config.reverse_flag = MOTOR_DIRECTION_NORMAL;
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motor_lf = DJIMotorInit(&chassis_motor_config);
chassis_motor_config.can_init_config.tx_id = 3,
chassis_motor_config.controller_setting_init_config.reverse_flag = MOTOR_DIRECTION_NORMAL;
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motor_rf = DJIMotorInit(&chassis_motor_config);
chassis_motor_config.can_init_config.tx_id = 1,
chassis_motor_config.controller_setting_init_config.reverse_flag = MOTOR_DIRECTION_NORMAL;
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motor_lb = DJIMotorInit(&chassis_motor_config);
chassis_motor_config.can_init_config.tx_id = 2,
chassis_motor_config.controller_setting_init_config.reverse_flag = MOTOR_DIRECTION_NORMAL;
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motor_rb = DJIMotorInit(&chassis_motor_config);
referee_data = RefereeInit(&huart6); // 裁判系统初始化
SuperCap_Init_Config_s cap_conf = {
.can_config = {
.can_handle = &hcan2,
.tx_id = 0x302, // 超级电容默认接收id
.rx_id = 0x301, // 超级电容默认发送id,注意tx和rx在其他人看来是反的
}};
cap = SuperCapInit(&cap_conf); // 超级电容初始化
// 发布订阅初始化,如果为双板,则需要can comm来传递消息
#ifdef CHASSIS_BOARD
Chassis_IMU_data = INS_Init(); // 底盘IMU初始化
CANComm_Init_Config_s comm_conf = {
.can_config = {
.can_handle = &hcan2,
.tx_id = 0x311,
.rx_id = 0x312,
},
.recv_data_len = sizeof(Chassis_Ctrl_Cmd_s),
.send_data_len = sizeof(Chassis_Upload_Data_s),
};
chasiss_can_comm = CANCommInit(&comm_conf); // can comm初始化
#endif // CHASSIS_BOARD
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#ifdef ONE_BOARD // 单板控制整车,则通过pubsub来传递消息
chassis_sub = SubRegister("chassis_cmd", sizeof(Chassis_Ctrl_Cmd_s));
chassis_pub = PubRegister("chassis_feed", sizeof(Chassis_Upload_Data_s));
#endif // ONE_BOARD
}
#define LF_CENTER ((HALF_TRACK_WIDTH + CENTER_GIMBAL_OFFSET_X + HALF_WHEEL_BASE - CENTER_GIMBAL_OFFSET_Y) * ANGLE_2_RAD)
#define RF_CENTER ((HALF_TRACK_WIDTH - CENTER_GIMBAL_OFFSET_X + HALF_WHEEL_BASE - CENTER_GIMBAL_OFFSET_Y) * ANGLE_2_RAD)
#define LB_CENTER ((HALF_TRACK_WIDTH + CENTER_GIMBAL_OFFSET_X + HALF_WHEEL_BASE + CENTER_GIMBAL_OFFSET_Y) * ANGLE_2_RAD)
#define RB_CENTER ((HALF_TRACK_WIDTH - CENTER_GIMBAL_OFFSET_X + HALF_WHEEL_BASE + CENTER_GIMBAL_OFFSET_Y) * ANGLE_2_RAD)
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/**
* @brief ,
* ,
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*/
static void MecanumCalculate()
{
vt_lf = -chassis_vx - chassis_vy - chassis_cmd_recv.wz * LF_CENTER;
vt_rf = -chassis_vx + chassis_vy - chassis_cmd_recv.wz * RF_CENTER;
vt_lb = chassis_vx - chassis_vy - chassis_cmd_recv.wz * LB_CENTER;
vt_rb = chassis_vx + chassis_vy - chassis_cmd_recv.wz * RB_CENTER;
}
/**
* @brief
*
*/
static void LimitChassisOutput()
{
// 功率限制待添加
// referee_data->PowerHeatData.chassis_power;
// referee_data->PowerHeatData.chassis_power_buffer;
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// 完成功率限制后进行电机参考输入设定
DJIMotorSetRef(motor_lf, vt_lf);
DJIMotorSetRef(motor_rf, vt_rf);
DJIMotorSetRef(motor_lb, vt_lb);
DJIMotorSetRef(motor_rb, vt_rb);
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}
/**
* @brief ,,
* ,IMU的数据
*
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*/
static void EstimateSpeed()
{
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// 根据电机速度和陀螺仪的角速度进行解算,还可以利用加速度计判断是否打滑(如果有)
// chassis_feedback_data.vx vy wz =
// ...
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}
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/* 机器人底盘控制核心任务 */
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void ChassisTask()
{
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// 后续增加没收到消息的处理(双板的情况)
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// 获取新的控制信息
#ifdef ONE_BOARD
SubGetMessage(chassis_sub, &chassis_cmd_recv);
#endif
#ifdef CHASSIS_BOARD
chassis_cmd_recv = *(Chassis_Ctrl_Cmd_s *)CANCommGet(chasiss_can_comm);
#endif // CHASSIS_BOARD
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if (chassis_cmd_recv.chassis_mode == CHASSIS_ZERO_FORCE)
{ // 如果出现重要模块离线或遥控器设置为急停,让电机停止
DJIMotorStop(motor_lf);
DJIMotorStop(motor_rf);
DJIMotorStop(motor_lb);
DJIMotorStop(motor_rb);
}
else
{ // 正常工作
DJIMotorEnable(motor_lf);
DJIMotorEnable(motor_rf);
DJIMotorEnable(motor_lb);
DJIMotorEnable(motor_rb);
}
// 根据控制模式设定旋转速度
switch (chassis_cmd_recv.chassis_mode)
{
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case CHASSIS_NO_FOLLOW: // 底盘不旋转,但维持全向机动,一般用于调整云台姿态
chassis_cmd_recv.wz = 0;
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break;
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case CHASSIS_FOLLOW_GIMBAL_YAW: // 跟随云台,不单独设置pid,以误差角度平方为速度输出
chassis_cmd_recv.wz = 0.05f * powf(chassis_cmd_recv.wz, 2.0f);
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break;
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case CHASSIS_ROTATE: // 自旋,同时保持全向机动;当前wz维持定值,后续增加不规则的变速策略
// chassis_cmd_recv.wz=sin(t)
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break;
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default:
break;
}
// 根据云台和底盘的角度offset将控制量映射到底盘坐标系上
// 底盘逆时针旋转为角度正方向;云台命令的方向以云台指向的方向为x,采用右手系(x指向正北时y在正东)
static float sin_theta, cos_theta;
cos_theta = arm_cos_f32(chassis_cmd_recv.offset_angle * ANGLE_2_RAD);
sin_theta = arm_sin_f32(chassis_cmd_recv.offset_angle * ANGLE_2_RAD);
chassis_vx = chassis_cmd_recv.vx * cos_theta - chassis_cmd_recv.vy * sin_theta;
chassis_vy = chassis_cmd_recv.vx * sin_theta + chassis_cmd_recv.vy * cos_theta;
// 根据控制模式进行正运动学解算,计算底盘输出
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MecanumCalculate();
// 根据裁判系统的反馈数据和电容数据对输出限幅并设定闭环参考值
LimitChassisOutput();
// 根据电机的反馈速度和IMU(如果有)计算真实速度
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EstimateSpeed();
// 获取裁判系统数据
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// 我方颜色id小于7是红色,大于7是蓝色,注意这里发送的是对方的颜色, 0:blue , 1:red
chassis_feedback_data.enemy_color = referee_data->GameRobotStat.robot_id > 7 ? 1 : 0;
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// 当前只做了17mm热量的数据获取,后续根据robot_def中的宏切换双枪管和英雄42mm的情况
chassis_feedback_data.bullet_speed = referee_data->GameRobotStat.shooter_id1_17mm_speed_limit;
chassis_feedback_data.rest_heat = referee_data->PowerHeatData.shooter_heat0;
// 推送反馈消息
#ifdef ONE_BOARD
PubPushMessage(chassis_pub, (void *)&chassis_feedback_data);
#endif
#ifdef CHASSIS_BOARD
CANCommSend(chasiss_can_comm, (void *)&chassis_feedback_data);
#endif // CHASSIS_BOARD
}