基于stm32zet6的温度增量式pid控制详细例程源码
时间: 2023-07-23 09:01:37 浏览: 136
由于字数有限,无法提供整个例程的详细源码,但下面是一个基于STM32ZET6的温度增量式PID控制的简单例程代码:
1. 包含头文件:
```c
#include "stm32f4xx.h"
#include "stm32f4xx_rcc.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_adc.h"
#include "stm32f4xx_usart.h"
```
2. 定义常量及变量:
```c
#define TARGET_TEMP 25.0
#define KP 1.0
#define KI 0.1
#define KD 0.01
float current_temp = 0;
float previous_error = 0;
float integral = 0;
float derivative = 0;
float output;
```
3. 初始化相关外设:
```c
void Initialize()
{
// 初始化ADC模块,连接温度传感器
ADC_InitTypeDef ADC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOA, &GPIO_InitStructure);
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_TempSensorVrefintCmd(ENABLE);
ADC_Cmd(ADC1, ENABLE);
ADC_RegularChannelConfig(ADC1, ADC_Channel_16, 1, ADC_SampleTime_480Cycles);
}
```
4. 实现PID控制算法:
```c
void PIDControl()
{
float error = TARGET_TEMP - current_temp;
integral += error;
if(integral > 100) integral = 100; //积分上限
if(integral < -100) integral = -100; //积分下限
derivative = error - previous_error;
output = KP * error + KI * integral + KD * derivative;
previous_error = error;
}
```
5. 主函数中实现温度测量和控制输出:
```c
int main(void)
{
Initialize();
while(1)
{
// 测量当前温度
ADC_SoftwareStartConv(ADC1);
while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);
uint16_t adc_value = ADC_GetConversionValue(ADC1);
current_temp = (float)(adc_value * 3.3 / 4096 - 0.76) / 0.0025 + 25.0;
PIDControl();
// 控制输出
if(output > 100) output = 100; //输出上限
if(output < -100) output = -100; //输出下限
// 根据output控制继电器或者PWM输出等
}
}
```
这个例程基于STM32ZET6芯片和温度传感器进行了简单的温度控制实现,其中PID控制算法被用来计算输出值,并通过相应的外设控制系统输出。请根据实际需求进行相应的代码调整和修改。
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