invalid redeclaration of type name "PID"

[赵何祺]

#include "MK60N512VMD100.h"
/*=====================================
PID结构体
Steering:舵机PID结构
Dynamo:电机PID结构
======================================*/
typedef struct
{

unsigned int SetPoint;
unsigned int LastError;
unsigned int PrevError;
double Kp;
double Ki;
double Kd;
}PID;
static PID Steering,Dynamo;


void PID_Init();
unsigned int PID_Control(PID* pid,unsigned int NextPoint,double Kp,double Ki,double Kd);
void Steering_Control(unsigned int SetPoint,float difference,double Kp,double Ki,double Kd);
void Dynamo_Control(unsigned int SetPoint,double Kp,double Ki,double Kd);



不知道问什么它就报错了
Error[Pe256]: invalid redeclaration of type name "PID" (declared at line 16) C:\Users\zhq\Desktop\新建文件夹\小车整合3.0\src\Sources\H\Component_H\arithmetic0.h 16

[LubinLew]

Error[Pe256]: invalid redeclaration of type name "PID" (declared at line 16) C:\Users\zhq\Desktop\新建文件夹\小车整合3.0\src\Sources\H\Component_H\arithmetic0.h 16 PID结构体在文件arithmetic0.h中已经定义过了，重定义了

[AnYidan]

\\
	typedef struct _PID
	{

		unsigned int SetPoint;
		unsigned int LastError;
		unsigned int PrevError;
		double Kp;
		double Ki;
		double Kd;
	} PID;
	static PID Steering,Dynamo;