263 lines
8.6 KiB
C
263 lines
8.6 KiB
C
#include "PID.h"
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#define Motor_ECD_MAX 8192.0f
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/*
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*函数简介:位置式PID初始化结构体
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*参数说明:位置式PID参数结构体
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*参数说明:预期值
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*返回类型:无
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*备注:无
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*/
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void PID_PositionStructureInit(PID_PositionInitTypedef* PID_InitStructure,float NeedValue)
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{
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PID_InitStructure->Need_Value=NeedValue;
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PID_InitStructure->Ek=0;
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PID_InitStructure->Ek_Sum=0;
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PID_InitStructure->Ek_Min=0;
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PID_InitStructure->Ek_Max=0;
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PID_InitStructure->Kp=0;
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PID_InitStructure->Ki=0;
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PID_InitStructure->Kd=0;
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PID_InitStructure->OUT_Min=0;
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PID_InitStructure->OUT_Max=0;
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}
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/*
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*函数简介:位置式PID设置参数
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*参数说明:位置式PID参数结构体
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*参数说明:单精度浮点型Kp
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*参数说明:单精度浮点型Ki
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*参数说明:单精度浮点型Kd
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*返回类型:无
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*备注:无
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*/
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void PID_PositionSetParameter(PID_PositionInitTypedef* PID_InitStructure,float kp,float ki,float kd)
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{
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PID_InitStructure->Kp=kp;
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PID_InitStructure->Ki=ki;
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PID_InitStructure->Kd=kd;
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}
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/*
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*函数简介:位置式PID设置误差为0阈值
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*参数说明:位置式PID参数结构体
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*参数说明:误差为0阈值下限
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*参数说明:误差为0阈值上限
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*返回类型:无
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*备注:无
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*/
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void PID_PositionSetEkRange(PID_PositionInitTypedef* PID_InitStructure,float Ek_Min,float Ek_Max)
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{
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PID_InitStructure->Ek_Min=Ek_Min;
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PID_InitStructure->Ek_Max=Ek_Max;
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}
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/*
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*函数简介:位置式PID设置输出限幅
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*参数说明:位置式PID参数结构体
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*参数说明:输出限幅下限
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*参数说明:输出限幅上限
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*返回类型:无
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*备注:无
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*/
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void PID_PositionSetOUTRange(PID_PositionInitTypedef* PID_InitStructure,float OUT_Min,float OUT_Max)
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{
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PID_InitStructure->OUT_Min=OUT_Min;
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PID_InitStructure->OUT_Max=OUT_Max;
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}
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void PID_PositionSetNeedValue(PID_PositionInitTypedef* PID_InitStructure,float NeedValue)
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{
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PID_InitStructure->Need_Value=NeedValue;
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}
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/*
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*函数简介:位置式PID清理
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*参数说明:位置式PID参数结构体
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*返回类型:无
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*备注:使Ek和Sum为0
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*/
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void PID_PositionClean(PID_PositionInitTypedef* PID_InitStructure)
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{
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PID_InitStructure->Ek=0;
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PID_InitStructure->Ek_Sum=0;
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}
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/*
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*函数简介:位置式PID计算
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*参数说明:位置式PID参数结构体
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*参数说明:当前值
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*返回类型:无
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*备注:OUT=POUT+IOUT+DOUT=Kp*Ek+Ki*ΣEk+Kd*(Ek-Ek_Last)
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*备注:计算结果保存在位置式PID参数结构体中
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*/
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void PID_PositionCalc(PID_PositionInitTypedef* PID_InitStructure,float NowValue)
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{
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PID_InitStructure->Now_Value = NowValue;
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PID_InitStructure->Ek_Last = PID_InitStructure->Ek;
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PID_InitStructure->Ek = PID_InitStructure->Need_Value - PID_InitStructure->Now_Value;
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if(PID_InitStructure->Ek_Min < PID_InitStructure->Ek && PID_InitStructure->Ek < PID_InitStructure->Ek_Max)//误差为0检测
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{
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PID_InitStructure->Ek = 0;
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}
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PID_InitStructure->Ek_Sum += PID_InitStructure->Ek;
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PID_InitStructure->Ek_Del = PID_InitStructure->Ek - PID_InitStructure->Ek_Last;//误差差分
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if (PID_InitStructure->Ek_Sum > PID_InitStructure->OUT_Max)
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PID_InitStructure->Ek_Sum = PID_InitStructure->OUT_Max;
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else if (PID_InitStructure->Ek_Sum < PID_InitStructure->OUT_Min)
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PID_InitStructure->Ek_Sum = PID_InitStructure->OUT_Min;
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PID_InitStructure->P_OUT = PID_InitStructure->Kp * PID_InitStructure->Ek;
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PID_InitStructure->I_OUT = PID_InitStructure->Ki * PID_InitStructure->Ek_Sum;
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PID_InitStructure->D_OUT = PID_InitStructure->Kd * PID_InitStructure->Ek_Del;
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PID_InitStructure->OUT = PID_InitStructure->P_OUT + PID_InitStructure->I_OUT + PID_InitStructure->D_OUT;
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if(PID_InitStructure->OUT<PID_InitStructure->OUT_Min)//输出限幅
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PID_InitStructure->OUT = PID_InitStructure->OUT_Min;
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if(PID_InitStructure->OUT>PID_InitStructure->OUT_Max)
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PID_InitStructure->OUT = PID_InitStructure->OUT_Max;
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}
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/*
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*函数简介:位置式PID计算
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*参数说明:位置式PID参数结构体
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*参数说明:当前值
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*返回类型:无
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*备注:OUT=POUT+IOUT+DOUT=Kp*Ek+Ki*ΣEk+Kd*(Ek-Ek_Last)
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*备注:计算结果保存在位置式PID参数结构体中
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*/
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void PID_PositionCalc_Motor(PID_PositionInitTypedef* PID_InitStructure,float NowValue)
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{
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PID_InitStructure->Now_Value = NowValue;
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float err = PID_InitStructure->Need_Value - PID_InitStructure->Now_Value;
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if (err > 8192/2) { // 8192 / 2 = 4096
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err -= 8192;
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} else if (err < -8192/2) {
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err += 8192;
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}
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PID_InitStructure->Ek_Last = PID_InitStructure->Ek;
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PID_InitStructure->Ek = err;
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if(PID_InitStructure->Ek_Min < PID_InitStructure->Ek && PID_InitStructure->Ek < PID_InitStructure->Ek_Max)//误差为0检测
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{
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PID_InitStructure->Ek = 0;
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}
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PID_InitStructure->Ek_Sum += PID_InitStructure->Ek;
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PID_InitStructure->Ek_Del = PID_InitStructure->Ek - PID_InitStructure->Ek_Last;//误差差分
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if (PID_InitStructure->Ek_Sum > PID_InitStructure->OUT_Max)
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PID_InitStructure->Ek_Sum = PID_InitStructure->OUT_Max;
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else if (PID_InitStructure->Ek_Sum < PID_InitStructure->OUT_Min)
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PID_InitStructure->Ek_Sum = PID_InitStructure->OUT_Min;
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PID_InitStructure->P_OUT = PID_InitStructure->Kp * PID_InitStructure->Ek;
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PID_InitStructure->I_OUT = PID_InitStructure->Ki * PID_InitStructure->Ek_Sum;
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PID_InitStructure->D_OUT = PID_InitStructure->Kd * PID_InitStructure->Ek_Del;
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PID_InitStructure->OUT = PID_InitStructure->P_OUT + PID_InitStructure->I_OUT + PID_InitStructure->D_OUT;
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if(PID_InitStructure->OUT<PID_InitStructure->OUT_Min)//输出限幅
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PID_InitStructure->OUT = PID_InitStructure->OUT_Min;
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if(PID_InitStructure->OUT>PID_InitStructure->OUT_Max)
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PID_InitStructure->OUT = PID_InitStructure->OUT_Max;
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}
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/*
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*函数简介:增量式PID初始化结构体
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*参数说明:增量式PID参数结构体
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*参数说明:预期值
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*返回类型:无
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*备注:无
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*/
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void PID_IncrementalStructureInit(PID_IncrementalInitTypedef* PID_InitStructure,float NeedValue)
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{
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PID_InitStructure->Need_Value=NeedValue;
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PID_InitStructure->Ek=0;
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PID_InitStructure->Ek_Last=0;
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PID_InitStructure->Ek_Min=0;
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PID_InitStructure->Ek_Max=0;
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PID_InitStructure->Kp=0;
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PID_InitStructure->Ki=0;
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PID_InitStructure->Kd=0;
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PID_InitStructure->OUT_Min=-1e10;
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PID_InitStructure->OUT_Max=1e10;
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}
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/*
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*函数简介:增量式PID设置参数
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*参数说明:增量式PID参数结构体
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*参数说明:单精度浮点型Kp
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*参数说明:单精度浮点型Ki
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*参数说明:单精度浮点型Kd
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*返回类型:无
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*备注:无
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*/
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void PID_IncrementalSetParameter(PID_IncrementalInitTypedef* PID_InitStructure,float kp,float ki,float kd)
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{
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PID_InitStructure->Kp=kp;
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PID_InitStructure->Ki=ki;
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PID_InitStructure->Kd=kd;
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}
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/*
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*函数简介:增量式PID设置误差为0阈值
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*参数说明:增量式PID参数结构体
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*参数说明:误差为0阈值下限
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*参数说明:误差为0阈值上限
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*返回类型:无
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*备注:无
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*/
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void PID_IncrementalSetEkRange(PID_IncrementalInitTypedef* PID_InitStructure,float Ek_Min,float Ek_Max)
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{
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PID_InitStructure->Ek_Min=Ek_Min;
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PID_InitStructure->Ek_Max=Ek_Max;
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}
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/*
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*函数简介:增量式PID设置输出限幅
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*参数说明:增量式PID参数结构体
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*参数说明:输出限幅下限
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*参数说明:输出限幅上限
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*返回类型:无
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*备注:无
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*/
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void PID_IncrementalSetOUTRange(PID_IncrementalInitTypedef* PID_InitStructure,float OUT_Min,float OUT_Max)
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{
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PID_InitStructure->OUT_Min=OUT_Min;
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PID_InitStructure->OUT_Max=OUT_Max;
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}
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/*
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*函数简介:增量式PID计算
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*参数说明:增量式PID参数结构体
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*参数说明:当前值
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*返回类型:无
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*备注:OUT=POUT+IOUT+DOUT=Kp*ΔEk+Ki*ΣΔEk+Kd*(ΔEk-ΔEk_Last)=Kp*(Ek-Ek_Last)+Ki*Ek+Kd*(Ek-2*Ek_Last+Ek_Last2)
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*备注:计算结果保存在增量式PID参数结构体中
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*/
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void PID_IncrementalCalc(PID_IncrementalInitTypedef* PID_InitStructure,float NowValue)
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{
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PID_InitStructure->Now_Value =NowValue;
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PID_InitStructure->Ek_Last2 =PID_InitStructure->Ek_Last;
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PID_InitStructure->Ek_Last =PID_InitStructure->Ek;
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PID_InitStructure->Ek =PID_InitStructure->Need_Value-PID_InitStructure->Now_Value;
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if(PID_InitStructure->Ek_Min < PID_InitStructure->Ek && PID_InitStructure->Ek < PID_InitStructure->Ek_Max)//误差为0检测
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PID_InitStructure->Ek =0;
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PID_InitStructure->P_OUT =PID_InitStructure->Kp * (PID_InitStructure->Ek - PID_InitStructure->Ek_Last);
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PID_InitStructure->I_OUT =PID_InitStructure->Ki * PID_InitStructure->Ek;
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PID_InitStructure->D_OUT =PID_InitStructure->Kd * (PID_InitStructure->Ek-2*PID_InitStructure->Ek_Last+PID_InitStructure->Ek_Last2);
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PID_InitStructure->OUT =PID_InitStructure->P_OUT + PID_InitStructure->I_OUT+PID_InitStructure->D_OUT;
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if(PID_InitStructure->OUT<PID_InitStructure->OUT_Min)//输出限幅
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PID_InitStructure->OUT=PID_InitStructure->OUT_Min;
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if(PID_InitStructure->OUT>PID_InitStructure->OUT_Max)
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PID_InitStructure->OUT=PID_InitStructure->OUT_Max;
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}
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