feat(FOC): 增加闭环速度控制算法
- 重构setPhaseVoltage函数实现,提高执行效率 - 增加update_power函数,动态更新电源电压 - 优化velocity_open_loop函数,调用、setPhaseVoltage避免重复代码 - 实现angle_control和velocity_control闭环控制函数 - 调整PID控制器参数初始化及增加参数设置接口 - 改进电流和编码器速度卡尔曼滤波器实现 - 更新CAN通信数据打包逻辑,增加测试字段 - 在定时器中断中集成多种控制模式切换逻辑 - 完善角度传感器数据处理,改进速度计算方法 - 减小速度滤波数组大小,提升响应速度
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-41
@@ -1,52 +1,66 @@
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#include "pid.h"
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#include "Timer.h"
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#define _constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
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#define _constrain(amt, low, high) \
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((amt) < (low) ? (low) : ((amt) > (high) ? (high) : (amt)))
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#include "Can.h"
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extern CAN_transmiter CAN0_transmiter;
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PIDController::PIDController(float P, float I, float D, float ramp, float limit)
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: P(P)
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, I(I)
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, D(D)
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, output_ramp(ramp) // PID控制器加速度限幅
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, limit(limit) // PID控制器输出限幅
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, error_prev(0.0f)
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, output_prev(0.0f)
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, integral_prev(0.0f)
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{
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timestamp_prev = get_system_runtime_us() ;
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: P(P), I(I), D(D), output_ramp(ramp) // PID控制器加速度限幅
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,
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limit(limit) // PID控制器输出限幅
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,
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error_prev(0.0f), output_prev(0.0f), integral_prev(0.0f) {
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timestamp_prev = get_system_runtime_us();
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}
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// PID 控制器函数
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float PIDController::operator() (float error){
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// 计算两次循环中间的间隔时间
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unsigned long timestamp_now = get_system_runtime_us();
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float Ts = (timestamp_now - timestamp_prev) * 1e-6f;
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if(Ts <= 0 || Ts > 0.5f) Ts = 1e-3f;
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// P环
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float proportional = P * error;
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// Tustin 散点积分(I环)
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float integral = integral_prev + I*Ts*0.5f*(error + error_prev);
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integral = _constrain(integral, -limit, limit);
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// D环(微分环节)
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float derivative = D*(error - error_prev)/Ts;
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float PIDController::operator()(float error) {
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// 计算两次循环中间的间隔时间
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unsigned long timestamp_now = get_system_runtime_us();
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float Ts = (timestamp_now - timestamp_prev) * 1e-6f;
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if (Ts <= 0 || Ts > 0.5f)
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Ts = 1e-3f;
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// 将P,I,D三环的计算值加起来
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float output = proportional + integral + derivative;
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output = _constrain(output, -limit, limit);
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// P环
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float proportional = P * error;
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// Tustin 散点积分(I环)
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float integral = integral_prev + I * Ts * 0.5f * (error + error_prev);
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integral = _constrain(integral, -limit, limit);
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// D环(微分环节)
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float derivative = D * (error - error_prev) / Ts;
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// 将P,I,D三环的计算值加起来
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float output = proportional + integral + derivative;
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output = _constrain(output, -limit, limit);
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if(output_ramp > 0){
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// 对PID的变化速率进行限制
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float output_rate = (output - output_prev)/Ts;
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if (output_rate > output_ramp)
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output = output_prev + output_ramp*Ts;
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else if (output_rate < -output_ramp)
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output = output_prev - output_ramp*Ts;
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}
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// 保存值(为了下一次循环)
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integral_prev = integral;
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output_prev = output;
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error_prev = error;
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timestamp_prev = timestamp_now;
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return output;
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if (output_ramp > 0) {
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// 对PID的变化速率进行限制
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float output_rate = (output - output_prev) / Ts;
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if (output_rate > output_ramp)
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output = output_prev + output_ramp * Ts;
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else if (output_rate < -output_ramp)
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output = output_prev - output_ramp * Ts;
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}
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// 保存值(为了下一次循环)
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integral_prev = integral;
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output_prev = output;
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error_prev = error;
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timestamp_prev = timestamp_now;
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return output;
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}
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/**
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* @brief 设置PID参数
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*
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* @param P: P参数
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* @param I: I参数
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* @param D: D参数
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* @return void
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*/
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void PIDController::set_PID(float P, float I, float D) {
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P = P;
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I = I;
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D = D;
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}
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