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標題: DC-DC閉環帶穩壓控制單片機程序 [打印本頁]

作者: lzc1263321052 時間: 2017-5-17 15:32
標題: DC-DC閉環帶穩壓控制單片機程序
int main(void)
{
      u16 led0pwmval=1050;
  u8 key;                //±￡′æ¼üÖμ
      u16 adcx;
      u16 Zreal;
      float temp;
      float Xreal;
      KEY_Init();    //3õê¼»ˉóë°′¼üá¬½óμÄó2¼t½ó¿ú
      NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//éèÖÃÏμí3ÖD¶ÏóÅÏè¼¶·Ö×é2
      delay_init(168);  //3õê¼»ˉÑóê±oˉêy
      uart_init(115200);//3õê¼»ˉ′®¿ú2¨ìØÂêÎa115200
      TIM3_PWM_Init(2100-1,2-1);
      SPI1_Init();
      LED_Init();                                     //3õê¼»ˉLED "ADC1_CH5_VOL:0.000V"
      LCD_Init();       //3õê¼»ˉLCD½ó¿ú"ADC1_CH5_VAL:"
      Adc_Init();       //3õê¼»ˉADC
      BACK_COLOR=WHITE;
      POINT_COLOR=RED;//éèÖÃ×ÖìåÎaREDé«
      //LCD_ShowString(30,130,200,16,16,"BOOST____VAL:    ");
      LCD_ShowString(30,150,200,16,16,"BOOST____VOL:0.000V");       //ÏèÔú1ì¶¨Î»ÖÃÏÔê¾D¡êyμã
      while(1)
      {
            key=KEY_Scan(0);             //μÃμ½¼üÖμ
      if(key)
            {
                     switch(key)
                     {

                              case KEY2_PRES:
                              led0pwmval+=105;
                                    break;
                              case KEY1_PRES:
                                    led0pwmval-=105;
                                    break;
                              case KEY0_PRES:
                                    led0pwmval+=105;
                              break;
                              case WKUP_PRES:
                                    led0pwmval-=105;
                                    break;

                     }
            }else
            delay_ms(10);
            TIM_SetCompare1(TIM3,led0pwmval);
            adcx=Get_Adc_Average(ADC_Channel_3,200);//»ñè¡í¨μà5μÄ×a»»Öμ￡¬20′Îè¡Æ½¾ù  Õaàï»1¿éòÔè¡Æ½¾ù′ÎêyéÔÎ￠′óò»μã￡¬
            //LCD_ShowxNum(134,130,adcx,4,16,0);    //ÏÔê¾ADCC2éÑùoóμÄÔ-ê¼Öμ
            temp=(float)adcx*(3.3/4096);          //»ñè¡¼ÆËãoóμÄ′øD¡êyμÄêμ¼êμçÑ1Öμ￡¬±èèç3.1111
            adcx=temp;                                        //¸3ÖμÕûêy2¿·Ö¸øadcx±äá¿￡¬òòÎaadcxÎau16ÕûDÎ
            Zreal=11*adcx;
            LCD_ShowxNum(134,150,Zreal,1,16,0); //ÏÔê¾μçÑ1ÖμμÄÕûêy2¿·Ö￡¬3.1111μÄ»°￡¬Õaàï¾íêÇÏÔê¾3
            temp-=adcx;                         //°ÑòÑ¾-ÏÔê¾μÄÕûêy2¿·Öè￥μô￡¬áôÏÂD¡êy2¿·Ö￡¬±èèç3.1111-3=0.1111
            temp*=1000;             //D¡êy2¿·Ö3ËòÔ1000￡¬àyèç￡o0.1111¾í×a»»Îa111.1￡¬Ïàμ±óú±￡áôèyÎ»D¡êy¡
      Xreal=11*temp;
            LCD_ShowxNum(150,150,Xreal,3,16,0X80); //ÏÔê¾D¡êy2¿·Ö￡¨Ç°Ãæ×a»»ÎaáËÕûDÎÏÔê¾￡©￡¬ÕaàïÏÔê¾μÄ¾íêÇ111.
while(Zreal!=(int)25200/(2100-led0pwmval))  //μ÷½úÕûêy2¿·Öò»¶¨òaóëÔ¤¶¨Ïàò»ÖÂ. 25200êÇ123ËéÏ2100￡¬Õaàï¾-1y»ˉ¼òáË¡￡
            { if(Zreal>(int)25200/(2100-led0pwmval)) //intÇ¿ÖÆ×a»»￡¬μ«ò2óD¿éÄüêÇ¶àóàμÄ
                     led0pwmval-=0.02*led0pwmval;
                     else led0pwmval+=0.02*led0pwmval;
                     TIM_SetCompare1(TIM3,led0pwmval);
                     adcx=Get_Adc_Average(ADC_Channel_3,200);//»ñè¡í¨μà5μÄ×a»»Öμ￡¬20′Îè¡Æ½¾ù
               LCD_ShowxNum(134,130,adcx,4,16,0); //ÏÔê¾ADCC2éÑùoóμÄÔ-ê¼Öμ
               temp=(float)adcx*(3.3/4096);       //»ñè¡¼ÆËãoóμÄ′øD¡êyμÄêμ¼êμçÑ1Öμ￡¬±èèç3.1111
               adcx=temp;                                     //¸3ÖμÕûêy2¿·Ö¸øadcx±äá¿￡¬òòÎaadcxÎau16ÕûDÎ
               Zreal=11*adcx;                      //3ËéÏ11μÄÔ-òòêÇòòÎa¼óéÏáËÔË·Å￡¬2aá¿ÖμËõD¡áË11±¶¡￡
               LCD_ShowxNum(134,150,Zreal,1,16,0); //ÏÔê¾μçÑ1ÖμμÄÕûêy2¿·Ö￡¬3.1111μÄ»°￡¬Õaàï¾íêÇÏÔê¾3
               temp-=adcx;                         //°ÑòÑ¾-ÏÔê¾μÄÕûêy2¿·Öè￥μô￡¬áôÏÂD¡êy2¿·Ö￡¬±èèç3.1111-3=0.1111
               temp*=1000;                                     //D¡êy2¿·Ö3ËòÔ1000￡¬àyèç￡o0.1111¾í×a»»Îa111.1￡¬Ïàμ±óú±￡áôèyÎ»D¡êy¡
         Xreal=11*temp;
               LCD_ShowxNum(150,150,Xreal,3,16,0X80); //ÏÔê¾D¡êy2¿·Ö￡¨Ç°Ãæ×a»»ÎaáËÕûDÎÏÔê¾￡©￡¬ÕaàïÏÔê¾μÄ¾íêÇ111.
            }

            delay_ms(150);
      }
}

作者: 小小狼 時間: 2018-4-12 10:53
求電路圖

作者: m182892 時間: 2019-7-2 11:25
你這個閉環的輸出取樣點在哪里，怎么沒看到，沒有取樣點，靠開關控制PWM是開環。

歡迎光臨 (http://www.zg4o1577.cn/bbs/)

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