STM32模糊PID控制溫度控制程序原理圖+LabVIEW上位機

ID:327295 · 發表于 2020-8-16 17:52

主要設計與實現一種基于LabVIEW的溫度控制器的設計。能進行精準且快速的控溫。

1、能夠在LabVIEW上顯示出來并且控制其溫度。

2、能制冷到15攝氏度。

3、偏差能小于0.5攝氏度。

對電烤箱溫度控制系統建立模型，將傳統PID控制與模糊理論或遺傳算法相結合，設計了一種新的PID控制器。該控制器,能夠實現PID的三個參數自動整定,避免了人工整定的麻煩。仿真結果表明,這種控制算法具有結構簡單、響應速度快、控制精度高、魯棒性強的特點。

程序包括PID,PWM,DS18B20

Altium Designer畫的原理圖PCB

單片機源程序如下:

#include "delay.h"
#include "sys.h"
#include "oled.h"
#include <stdio.h>
#include "ds18b20.h"
#include "ds18b20_2.h"
#include "pid.h"
#include "stm32f10x.h"
#include "usart.h"
#include "PWM_Output.h"
static TIM_OCInitTypeDef PWMBASE;
static uint16_t per_tmp;
extern float Kp;
extern float Ki;
extern float Kd;
static int ind;
static unsigned char tmp2[60];
void init_pwm(uint16_t per, uint16_t pre)
{
TIM_TimeBaseInitTypeDef TIMBASE;
GPIO_InitTypeDef GPIOBASE;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
GPIOBASE.GPIO_Mode = GPIO_Mode_AF_PP;
GPIOBASE.GPIO_Speed = GPIO_Speed_50MHz;
GPIOBASE.GPIO_Pin = GPIO_Pin_8;
GPIO_Init(GPIOB, &GPIOBASE);
PWMBASE.TIM_OCMode = TIM_OCMode_PWM1;
PWMBASE.TIM_OutputState = TIM_OutputState_Enable;
PWMBASE.TIM_Pulse = per / 2;
PWMBASE.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC3Init(TIM4, &PWMBASE);
TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable);
TIMBASE.TIM_ClockDivision = TIM_CKD_DIV1;
TIMBASE.TIM_CounterMode = TIM_CounterMode_Up;
TIMBASE.TIM_Period = per - 1;
TIMBASE.TIM_Prescaler = pre;
TIM_TimeBaseInit(TIM4, &TIMBASE);
TIM_ARRPreloadConfig(TIM4, ENABLE);
TIM_Cmd(TIM4, ENABLE);
per_tmp = per;
}
void Cold_pwm(uint16_t pwm1)
{
if (pwm1 > per_tmp) pwm1 = per_tmp;
PWMBASE.TIM_Pulse = pwm1;
TIM_OC3Init(TIM4, &PWMBASE);
}
void Fan_pwm(uint16_t pwm1)
{
if (pwm1 > per_tmp) pwm1 = per_tmp;
PWMBASE.TIM_Pulse = pwm1;
TIM_OC2Init(TIM4, &PWMBASE);
}
void Fan_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_SetBits(GPIOB, GPIO_Pin_7);
}
float USART_Scanf(void)
{
if(USART_GetFlagStatus(USART2, USART_FLAG_RXNE) != RESET)
{
tmp2[ind++] = (USART_ReceiveData(USART2));
ind = 0;
while (ind < 5)
{
while (USART_GetFlagStatus(USART2, USART_FLAG_RXNE) == RESET)
{}
tmp2[ind++] = (USART_ReceiveData(USART2));
}
tmp2[ind] = '\0';
ind = 0;
if(tmp2[4] == 'C')
{
return(tmp2[0]-0x30)*10 + (tmp2[1]-0x30) + (tmp2[3]-0x30)*0.1;
}
}
return 0;
}
int main(void)
{
u8 datH[30];
u8 datL[30];
u8 Radiator[30];
u16 Kpf[7] = {10000, 10000, 10000, 5000, 4000, 0, 0};
float set = 0;
float set_USART = 0;
u8 set_key[3] = {' ', ' ', ' '};
float dat0 = 0;
float dat1 = 0;
float PRO = 0; //放置PID返回值，防止pid運算多次
int i = 0;
init_pwm(10000,72);
delay_init();
OLED_Init(); //初始化OLED
OLED_Clear();
DS18B20_Init();
DS18B20_Init_2();
USART2_Config();
// printf("\r\nInit OK");
Fan_Init();
set = 20.00;
Cold_pwm(10000);
Fan_pwm(0);
while(1)
{
i++;
//printf("%d\r\n", i);
dat0 = DS18B20_Get_Temp();
dat0 = dat0/10;
dat1 = DS18B20_Get_Temp_2();
dat1 = dat1/10;
set_USART = USART_Scanf();
if(set_USART != 0)
{
set = set_USART;
}
if((dat0 - set) > 15)
{
Kp = Kpf[0];
}
else if((dat0 - set) > 3 && (dat0 - set) <= 5)
{
Kp = Kpf[1];
}
else if((dat0 - set) > 2 && (dat0 - set) <= 3)
{
Kp = Kpf[2];
}
else if((dat0 - set) <= 2 && (dat0 - set) >= 0.5)
{
Kp = Kpf[3];
}
else if((dat0 - set) < 0.5 && (dat0 - set) >= 0)
{
Kp = Kpf[4];
}
else if((dat0 - set) <= 0)
{
Kp = Kpf[5];
}
if((dat0 - set) >= 0)
{
Cold_pwm(0);
}
else
{
Cold_pwm(10000);
}
if(dat1 >= 43)
{
OLED_ShowString(0, 0, "WARNING");
}
else
{
OLED_ShowString(0, 0, " ");
}
PRO = inc_pid(dat0, set);
//printf(" PWM:%.2f%%",(PRO/100));
//printf(" Fan:%.2f",dat1);
Fan_pwm(PRO);
// sprintf(pwm, "PWM:%.2f%", (PRO/100));
sprintf(datH, "Current:%.2f", dat0);
sprintf(Radiator, "Radiator:%.2f", dat1);
// OLED_ShowString(0, 0, pwm);
OLED_ShowString(0, 4, datL);
OLED_ShowString(0, 6, Radiator);
sprintf(datL, "Setting:%.2f", set);
OLED_ShowString(0, 2, datH);
if(i == 23)
{
i = 0;
printf("A%.2fB%.2fD",dat0,dat1 );
}
}
}

復制代碼

下載(設計中還存在一些瑕疵,希望各位大佬指導):

ID:587076 · 發表于 2020-9-23 09:37

好東西,做好了再來評論嘻嘻

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STM32模糊PID控制溫度控制程序原理圖+LabVIEW上位機

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