使用QT编写:位置型PID程序设计 1、编写PID程序 2、假定给定0.6,测量0.3,比例带50,积分时间50s,微分时间1s,控制周期1s 3、计算并显示前10次控制输出。
时间: 2024-03-21 17:39:54 浏览: 52
好的,我可以为您提供一份基于QT的位置型PID程序设计。
在QT中,您可以使用QTimer类来实现控制周期,使用QLineEdit类来获取输入的参数,使用QLabel类来显示输出结果。
以下是基于您提供的参数的PID程序设计:
```cpp
#include <QApplication>
#include <QVBoxLayout>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QTimer>
double kp = 0.5;
double ki = 0.01;
double kd = 0.1;
double setpoint = 0.6;
double output = 0.0;
double integral = 0.0;
double last_error = 0.0;
double dt = 1.0; // 控制周期1s
int counter = 0;
double pid(double input)
{
double error = setpoint - input;
integral += error * dt;
double derivative = (error - last_error) / dt;
output = kp * error + ki * integral + kd * derivative;
last_error = error;
return output;
}
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QWidget* widget = new QWidget();
QVBoxLayout* layout = new QVBoxLayout(widget);
QLabel* label_p = new QLabel("kp:");
QLineEdit* edit_p = new QLineEdit();
edit_p->setText(QString::number(kp));
layout->addWidget(label_p);
layout->addWidget(edit_p);
QLabel* label_i = new QLabel("ki:");
QLineEdit* edit_i = new QLineEdit();
edit_i->setText(QString::number(ki));
layout->addWidget(label_i);
layout->addWidget(edit_i);
QLabel* label_d = new QLabel("kd:");
QLineEdit* edit_d = new QLineEdit();
edit_d->setText(QString::number(kd));
layout->addWidget(label_d);
layout->addWidget(edit_d);
QLabel* label_setpoint = new QLabel("setpoint:");
QLineEdit* edit_setpoint = new QLineEdit();
edit_setpoint->setText(QString::number(setpoint));
layout->addWidget(label_setpoint);
layout->addWidget(edit_setpoint);
QLabel* label_output = new QLabel("Output:");
QLabel* output_value = new QLabel();
layout->addWidget(label_output);
layout->addWidget(output_value);
QPushButton* btn_start = new QPushButton("Start");
layout->addWidget(btn_start);
QTimer timer;
QObject::connect(&timer, &QTimer::timeout, [&](){
double input = 0.3; // 测量值为0.3
output = pid(input);
counter++;
if (counter <= 10) {
output_value->setText(QString::number(output));
} else {
timer.stop();
}
});
QObject::connect(btn_start, &QPushButton::clicked, [&](){
kp = edit_p->text().toDouble();
ki = edit_i->text().toDouble();
kd = edit_d->text().toDouble();
setpoint = edit_setpoint->text().toDouble();
counter = 0;
integral = 0.0;
last_error = 0.0;
output = 0.0;
output_value->setText("");
timer.start(dt * 1000); // 将秒转换为毫秒
});
widget->show();
return a.exec();
}
```
您可以将以上代码复制到QT的main函数中,然后运行程序,输入参数,点击start按钮,即可计算并显示前10次控制输出。
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