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標題: Proteus仿真stm32 PWM直流電機出現(xiàn)Speed超出預設(shè)范圍的值 [打印本頁]

作者: 繞指的柔 時間: 2024-2-26 23:58
標題: Proteus仿真stm32 PWM直流電機出現(xiàn)Speed超出預設(shè)范圍的值

存在問題：預期的Speed是在-100~100，但實際proteus仿真，反轉(zhuǎn)時Speed為何存在超出范圍的數(shù)值
單片機源程序如下:
main.c代碼：#include "stm32f10x.h"
#include  "OLED.h"
#include "delay.h"
#include "Dc_Motor.h"
#include "key.h"

u8 Key;
int8_t Speed;

int main(void)
{
      delay_init();
      OLED_Init();
      Key_Init();
      Dc_Motor_Init();
      OLED_Clear();
      OLED_ShowString(1,1,"Key:");
      OLED_ShowString(2,1,"Speed:");
      Dc_Motor_SetSpeed(0);
      while(1)
      {
            Key=Key_GetNum();
            if (Key == 1)
            {
                     Speed += 30;
                     if (Speed > 100)
                     {
                              Speed = -100;
                     }
                     OLED_ShowString(1,5,"+");
                     OLED_ShowNum(2,7,Speed,6);
            }
            if (Key == 2)
            {
                     Speed -= 40;
                     if (Speed < -100)
                     {
                              Speed = 100;
                     }
                     OLED_ShowString(1,5,"-");
                     OLED_ShowNum(2,7,Speed,6);
            }
            Dc_Motor_SetSpeed(Speed);

      }
}
PWM.c代碼：

#include "PWM.h"

void PWM_Init(void)
{
      //開啟定時器2時鐘
      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);
      //開啟GPIOA時鐘
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);


      //GPIOA配置
      GPIO_InitTypeDef GPIO_InitStructure;
      GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
      GPIO_InitStructure.GPIO_Pin=GPIO_Pin_2;
      GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
      //GPIOA初始化
      GPIO_Init(GPIOA,&GPIO_InitStructure);

      TIM_InternalClockConfig(TIM2);//TIM2 選擇定時器的內(nèi)部時鐘源
      //時基單元配置
      TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
      //時鐘分頻：1，2，4分頻
      TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
      //計數(shù)器計數(shù)方式：向上、向下、中央對齊計數(shù)
      TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up;
      //設(shè)置ARR時鐘周期
      TIM_TimeBaseInitStructure.TIM_Period=100-1;//ARR:10000個數(shù)后重裝
      //設(shè)置PSC預分頻的值
      TIM_TimeBaseInitStructure.TIM_Prescaler=720-1;//PSC:720分頻，計數(shù)頻率100k
      //重復計數(shù)器的值，高級定時器，這里用不到設(shè)置為0
      TIM_TimeBaseInitStructure.TIM_RepetitionCounter=0;
      //時基單元初始化
      TIM_TimeBaseInit(TIM2,&TIM_TimeBaseInitStructure);

      //初始化配置定時器輸出比較單元：TIM_OC
      TIM_OCInitTypeDef TIM_OCInitStructure;
      TIM_OCStructInit(&TIM_OCInitStructure);
      //輸出比較的模式：PWM1模式
      TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;
      //輸出比較的極性：高極性：極性不翻轉(zhuǎn)
      TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;
      //設(shè)置輸出使能
      TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
      //設(shè)置捕獲比較寄存器CCR的值
      TIM_OCInitStructure.TIM_Pulse=0;
      //輸出比較單元，通道3初始化
      TIM_OC3Init(TIM2,&TIM_OCInitStructure);

      //使能TIM2
      TIM_Cmd(TIM2,ENABLE);
}

void PWM_SetCompare1(u16 Compare)
{
      //修改CCR值
      TIM_SetCompare1(TIM2,Compare);
}

void PWM_SetCompare2(u16 Compare)
{
      //修改CCR值
      TIM_SetCompare2(TIM2,Compare);
}

void PWM_SetCompare3(u16 Compare)
{
      //修改CCR值
      TIM_SetCompare3(TIM2,Compare);
}

Dc_Motor.c代碼：
#include "Dc_Motor.h"

void Dc_Motor_Init(void)
{
      //電機速度控制設(shè)置
      PWM_Init();
      //電機方向控制設(shè)置
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

      GPIO_InitTypeDef GPIO_InitStructure;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void Dc_Motor_SetSpeed(int8_t Speed)
{
      //正轉(zhuǎn)
      if (Speed > 0)
      {
            GPIO_SetBits(GPIOA, GPIO_Pin_4);//AIN1:H
            GPIO_ResetBits(GPIOA, GPIO_Pin_5);//AIN2:L
            PWM_SetCompare3(Speed);
      }
      //反轉(zhuǎn)
      else if(Speed < 0)
      {
            GPIO_ResetBits(GPIOA, GPIO_Pin_4);//AIN1:L
            GPIO_SetBits(GPIOA, GPIO_Pin_5);//AIN2:H
            PWM_SetCompare3(-Speed);
      }
      //停止
      else
      {
            GPIO_ResetBits(GPIOA, GPIO_Pin_4);//AIN1:L
            GPIO_ResetBits(GPIOA, GPIO_Pin_5);//AIN2:L
//             PWM_SetCompare3(-Speed);
      }
}

key.c代碼：
#include "key.h"

void Key_Init(void)
{
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);//GPIOB
      GPIO_InitTypeDef GPIO_InitStructure;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //設(shè)置上拉模式 GPIO_Mode_IPU
      GPIO_InitStructure.GPIO_Pin=GPIO_Pin_1|GPIO_Pin_11;
      GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
      GPIO_Init(GPIOB,&GPIO_InitStructure);
      GPIO_SetBits(GPIOB,GPIO_Pin_1|GPIO_Pin_11);
}

uint8_t Key_GetNum(void)
{
      uint8_t KeyNum = 0;
      if(GPIO_ReadInputDataBit(GPIOB , GPIO_Pin_1)==0)
      {
            delay_ms(20);
            while(GPIO_ReadInputDataBit(GPIOB , GPIO_Pin_1)==0);
            delay_ms(20);
            KeyNum=1;
      }
      else if(GPIO_ReadInputDataBit(GPIOB , GPIO_Pin_11)==0)
      {
            delay_ms(20);
            while(GPIO_ReadInputDataBit(GPIOB , GPIO_Pin_11)==0);
            delay_ms(20);
            KeyNum=2;
      }
      return KeyNum;
}

仿真程序TIM2_out_compare_dc_motor.7z

314.64 KB, 下載次數(shù): 16

作者: xuyaqi 時間: 2024-2-27 11:38
Speed算出來的值沒有問題，應該是OLED顯示與仿真問題

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