《软件课程设计》word版

1、软件课程设计一、 目的1、 掌握C#进行程序设计的基本思路和方法2、 能利用C#编程实现简单的任务3、 结合控制系统理论用C#进行计算机控制仿真二、 设计内容1、 对一阶系统实现PID算法控制并进行仿真，具体功能如下：1） 基本要求：实现PID算法和一阶系统差分方程仿真，PID算法中的四个参数和一阶系统的参数都可以通过菜单进行设定，系统对阶越函数的响应以图形方式实时显示在窗口中。2） 附加功能：将系统的时间响应数据保存到数据库中，具体应包括下列属性：时间，输出值。将系统的历史响应重现。使用Teechart控件作为显示输出。三、 计划1、熟悉了解C#要包括C#、界面设计、绘图功能、数据库访问技术

2、、ActiveX控件的注册和使用。2、回顾控制系统原理中的PID算法及PID算法的数字化。3、实现PID算法对一阶系统的控制并显示系统的时间响应。4、将系统的时间响应数据存储到数据库中，然后重现整个响应。五、 图形界面及代码using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace Wi

3、ndowsFormsApplication3 public partial class Form1 : Form private Form2 form2; public PID pid; public struct PID public double kp, ki, kd, T1, deltat, startpoi, endpoi, lasterror, preverror, sumerror, setpoint; / public PID pid; /public double data=new double20000; public Form1() InitializeComponent(

4、); private void Form1_Load(object sender, EventArgs e) private void button1_Click(object sender, EventArgs e) /double c; /PID pid; pid.kp = Convert.ToDouble(textBox1.Text); pid.ki = Convert.ToDouble(textBox2.Text); pid.kd = Convert.ToDouble(textBox3.Text); pid.T1 = Convert.ToDouble(textBox4.Text); p

5、id.deltat = Convert.ToDouble(textBox5.Text); pid.startpoi = Convert.ToDouble(textBox6.Text); pid.endpoi = Convert.ToDouble(textBox7.Text); this.Hide(); form2 = new Form2(); form2.Show(); MessageBox.Show("您¨²好?，ê?欢?迎®-使º1用®?本À?PID控?制?时º¡À域®&

6、#168;°仿¤?真?软¨¨ª件t！ê?"); /MessageBox.Show("successful!"); private void button2_Click(object sender, EventArgs e) this.Hide(); private void 历史查询ToolStripMenuItem_Click(object sender, EventArgs e) form2 = new Form2(); form2.Show(); form2.ReadDataRec(pid); pr

7、ivate void 修改参数ToolStripMenuItem_Click(object sender, EventArgs e) pid.kp = Convert.ToDouble(textBox1.Text); pid.ki = Convert.ToDouble(textBox2.Text); pid.kd = Convert.ToDouble(textBox3.Text); pid.T1 = Convert.ToDouble(textBox4.Text); pid.deltat = Convert.ToDouble(textBox5.Text); pid.startpoi = Conv

8、ert.ToDouble(textBox6.Text); pid.endpoi = Convert.ToDouble(textBox7.Text); this.Hide(); form2 = new Form2(); form2.Show(); private void 退出ToolStripMenuItem_Click(object sender, EventArgs e) this.Close(); private void 修改查询ToolStripMenuItem_Click(object sender, EventArgs e) pid.startpoi = Convert.ToDo

9、uble(textBox6.Text); pid.endpoi = Convert.ToDouble(textBox7.Text); this.Hide(); form2 = new Form2(); form2.Show(); 当按下确定的时候：using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;

10、namespace WindowsFormsApplication3 public partial class Form2 : Form private Form1 form1; /private Graphics gx; public struct PID public double kp, ki, kd, T1, deltat, startpoi, endpoi, lasterror, preverror, sumerror, setpoint; public PID pid; private Point P0; private Point P1; public double Xnt =

11、0, Ynt = 0; public double Data=new double 20000; public Form2() InitializeComponent(); private void Form2_Load(object sender, EventArgs e) pid.kp = 200; pid.ki = 1; pid.kd = 1; pid.setpoint = 10; pid.T1 = 0.0001; pid.deltat = 40; P0.X = 260; P0.Y = 260; /Pen thepen; private void 返回Click(object sende

12、r, EventArgs e) this.Hide(); form1 = new Form1(); form1.Show(); private void ReadDataRec(PID p) Graphics g; Pen thepen = new Pen(Color.Red, 2); Form2.Data1.Recordset.MoveFirst(); for (int i = 1; i <= p.startpoi; i+) Form2.Data1.Recordset.MoveNext(); for (int i = 1; i <=p.endpoi- p.startpoi; i+

13、) Datai=Form2.Data1.Recordset.Fields("value"); Form2.Data1.Recordset.MoveNext(); Form1.TChart1.AddSeries (scLine); Form1.TChart1.Series(0).Clear(); for(int i=1;i<=p.endpoi-p.startpoi;i+) double j=i+p.startpoi; P1.X=(int) (j/60); P1.Y=(int) Datai-1; g.DrawLine(thepen,P0,P1); P0=P1; if(i%

14、20=0) Form2.TChart1.AutoRepaint = false; Form2.TChart1.Series(0).Add(Datai-1,i,BackColor); Form1.TChart1.AutoRepaint = true; Form1.TChart1.Repaint(); label1.Text="x="+ j; label2.Text="y="+Datai-1; timer1_Tick(); protected override void OnPaintAndWriteDataRec(PaintEventArgs e) Dat

15、a1.Recordset.MoveFirst(); while (!Data1.Recordset.Eof() Data1.Recordset.Delete(); Data1.Recordset.MoveNext(); for (int i = 1; i <= 20000; i+) Xnt = Compute_PID(pid, Ynt); Datai - 1 = Last_Val(Ynt, Xnt, pid); Data1.Recordset.AddNew(); Data1.Recordset.Fields("time") = i; Data1.Recordset.F

16、ields("value") = Datai - 1; Data1.Recordset.Update(); TChart1.AddSeries(scLine); TChart1.Series(0).Clear(); for (int i = 1; i <= 20000; i+) if (i % 20 = 0) Form2.TChart1.AutoRepaint = true; Form2.TChart1.Series(0).Add(Datai - 1, i, BackColor); Form1.TChart1.AutoRepaint = true; Form1.TCh

17、art1.Repaint(); label1.Text = "x=" + j; label2.Text = "y=" + Datai - 1; timer1_Tick(); private double Compute_PID(PID p, double nextpoint) double derror, error; error = p.setpoint - nextpoint;/偏?差? p.sumerror = error + p.sumerror;/积y分¤? derror = p.lasterror - p.preverror;/当&

18、#204;¡À前¡ã微¡é分¤? p.preverror = p.lasterror; p.lasterror = error; return (p.kp * error + p.ki * p.sumerror + p.kd * derror); private double Last_Val(double Xt,double Yt, PID p) return (p.deltat / p.T1 * Xt - (p.deltat / p.T1 - 1) * Yt); private void timer1_Tick(obje

19、ct sender, EventArgs e) /定¡§时º¡À器¡Â每?0.01s自Á?己o调Ì¡Â用®?一°?次ä?，ê?在¨²此ä?相¨¤当Ì¡À于®¨²延¨®时º¡À作Á¡Â用®? private void checkBox1_CheckedChanged(object sender, EventArgs e) TChart1.Panel.Gradient.Visible = Check1.Value; private void checkBox2_CheckedChanged(object sender, EventArgs e) TChart1.Aspect.View3D = Check2.Val