在上面的代码基础上写一个模糊pid控制的程序
时间: 2024-03-07 08:53:08 浏览: 99
模糊PID控制温控系统设计C语言程序代码.zip_PID C#_pid_模糊pid c程序_模糊pid控制c_温控
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好的,以下是基于上述代码的模糊PID控制程序示例:
```c
#include "stm32f10x.h"
#include "stm32f10x_adc.h"
#include "stm32f10x_gpio.h"
#include "stm32f10x_rcc.h"
#include "stm32f10x_tim.h"
#define MAX_PWM 1000 // PWM最大值
#define MIN_PWM 0 // PWM最小值
#define MAX_TEMP 50 // 温度最大值
#define MIN_TEMP 0 // 温度最小值
// 模糊PID参数
float Kp = 0.6;
float Ki = 0.05;
float Kd = 0.1;
float error = 0;
float last_error = 0;
float integral = 0;
float derivative = 0;
float output = 0;
// 温度传感器读取函数
float get_temperature() {
ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_55Cycles5);
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);
uint16_t adc_value = ADC_GetConversionValue(ADC1);
float voltage = (float)adc_value / 4096 * 3.3;
float temperature = voltage / 0.01;
return temperature;
}
// 模糊PID控制函数
float fuzzy_pid(float error) {
float e1, e2, e3, e4; // 定义模糊集合
float k1, k2, k3; // 定义模糊规则
float output = 0;
// 计算模糊集合
e1 = 1.0 / (1.0 + exp(-2.0 * error));
e2 = 1.0 / (1.0 + exp(-1.0 * error));
e3 = 1.0;
e4 = 1.0 / (1.0 + exp(1.0 * error));
// 计算模糊规则
k1 = e1 * (-0.5) + e2 * (-0.3) + e3 * 0.1 + e4 * 0.3;
k2 = e1 * (-0.3) + e2 * (-0.1) + e3 * 0.3 + e4 * 0.5;
k3 = e1 * (-0.1) + e2 * 0.1 + e3 * 0.5 + e4 * 0.7;
// 计算输出
output = k1 * MIN_PWM + k2 * 500 + k3 * MAX_PWM;
return output;
}
// PWM输出函数
void set_pwm(uint16_t value) {
TIM_SetCompare2(TIM3, value);
}
int main(void) {
// 初始化
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;
TIM_OCInitTypeDef TIM_OCInitStruct;
ADC_InitTypeDef ADC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOC, ENABLE);
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOC, &GPIO_InitStructure);
TIM_TimeBaseInitStruct.TIM_Period = 1000;
TIM_TimeBaseInitStruct.TIM_Prescaler = 71;
TIM_TimeBaseInitStruct.TIM_ClockDivision = 0;
TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStruct);
TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStruct.TIM_Pulse = 0;
TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC2Init(TIM3, &TIM_OCInitStruct);
TIM_Cmd(TIM3, ENABLE);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_Cmd(ADC1, ENABLE);
while (1) {
float temperature = get_temperature();
error = temperature - 25; // 假设25度为理想温度
integral += error;
derivative = error - last_error;
output = Kp * error + Ki * integral + Kd * derivative;
last_error = error;
if (output > MAX_PWM) {
output = MAX_PWM;
} else if (output < MIN_PWM) {
output = MIN_PWM;
}
// 调用模糊PID函数计算输出
output = fuzzy_pid(output);
set_pwm((uint16_t)output);
if (temperature > MAX_TEMP) {
set_pwm(MIN_PWM);
} else if (temperature < MIN_TEMP) {
set_pwm(MAX_PWM);
}
delay_ms(1000); // 1秒延迟
}
}
```
需要注意的是,以上代码中的模糊PID控制函数仅为示例,具体实现可能需要根据你的需求进行调整。同时,模糊PID参数也需要根据实际情况进行调整。
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