模糊PID算法控制阀门开度切换MATLAB代码(阀1从开到关,阀2从关到开)
时间: 2023-12-31 16:04:00 浏览: 32
以下是一个基于模糊PID算法的控制阀门开度切换的MATLAB代码示例:
```matlab
% 定义模糊控制器
fuzzyPID = readfis('fuzzyPID.fis');
% 设定初始参数
error = 0;
last_error = 0;
integral = 0;
derivative = 0;
output = 0;
setpoint = 0;
valve1_open = 100;
valve2_open = 0;
while true
% 获取当前阀门开度值
valve1_value = read_valve1_value();
valve2_value = read_valve2_value();
% 计算误差
error = setpoint - valve1_value;
% 计算积分项
integral = integral + error;
if integral > 100
integral = 100;
elseif integral < -100
integral = -100;
end
% 计算微分项
derivative = error - last_error;
% 计算模糊PID控制输出
output = evalfis([error, integral, derivative], fuzzyPID);
% 更新阀门开度值
if valve1_value >= 90 && valve1_value < 100
valve1_open = 90;
valve2_open = 10;
elseif valve1_value >= 80 && valve1_value < 90
valve1_open = 80;
valve2_open = 20;
elseif valve1_value >= 70 && valve1_value < 80
valve1_open = 70;
valve2_open = 30;
elseif valve1_value >= 60 && valve1_value < 70
valve1_open = 60;
valve2_open = 40;
elseif valve1_value >= 50 && valve1_value < 60
valve1_open = 50;
valve2_open = 50;
elseif valve1_value >= 40 && valve1_value < 50
valve1_open = 40;
valve2_open = 60;
elseif valve1_value >= 30 && valve1_value < 40
valve1_open = 30;
valve2_open = 70;
elseif valve1_value >= 20 && valve1_value < 30
valve1_open = 20;
valve2_open = 80;
elseif valve1_value >= 10 && valve1_value < 20
valve1_open = 10;
valve2_open = 90;
elseif valve1_value >= 0 && valve1_value < 10
valve1_open = 0;
valve2_open = 100;
end
% 将输出应用于控制
write_valve1_open(valve1_open + output);
write_valve2_open(valve2_open - output);
% 更新上次误差
last_error = error;
% 延迟一段时间,继续循环
pause(0.1);
end
```
在这个示例中,我们使用了一个预先定义的模糊PID控制器(保存在fuzzyPID.fis文件中),并在主循环中执行以下步骤:
1. 读取当前阀门开度值;
2. 计算误差、积分项、微分项和模糊PID控制输出;
3. 根据当前阀门开度值和控制输出更新阀门开度;
4. 延迟一段时间,继续循环。
注意,这个示例中我们假设了阀门开度值可以通过read_valve1_value()和read_valve2_value()函数实时获取,并且阀门开度值可以通过write_valve1_open()和write_valve2_open()函数实时更新。在实际应用中,你需要根据你的硬件和控制系统进行相应的修改。