第一次作业-程序化线图处理.doc

第一次作业 程序化线图处理
一．题目
线图的程序化处理：
上机：将下图编程实现（大作业）

二．解题思路
本线图为分区域线图，对功率和转速需要进行分段讨论，采用Visual Basci软件可实现匹配类型的功能，使用用if语句实现各个区域分段，而各个区域的分界线为直线和斜线，它们都可以通过解线性方程而获得，以各个分界线列方程用And语句即可实现题目所要求的功能。
可将功率的范围分为0.8~1，1~2.6, 2.6~4, 4~6，6~12, 12~23，23~37……220~800等多个区域，然后分别列出各个区域相关的方程组，即可有Visual Basic编程实现功能。
三． 程序代码
Private Sub Form_Load()
Picture = LoadPicture(App.Path + "\1.jpg")
End Sub

Private Sub Command1_Click()
Dim x As Double
Dim y As Double
If Not IsNumeric(Text1.Text) Then
MsgBox "请在输入功率时输入数字", , "警告"
Text1.Text = ""
Text1.SetFocus
End If
If Not IsNumeric(Text2.Text) Then
MsgBox "请输入转速时输入数字", , "警告"
Text2.Text = ""
Text2.SetFocus
End If

x = Text1.Text
y = Text2.Text

If x < 0.8 Or y < 100 Then
MsgBox "数据输入有误，请重新输入!"
ElseIf x >= 0.8 And x <= 1 And y <= 1350 * (x - 4 / 9) Then
MsgBox "您选择的类型为A型!"

ElseIf x >= 0.8 And x <= 1 And y > 1350 * (x - 4 / 9) And y <= 7000 Then
MsgBox "您选择的类型为O型!"

ElseIf x >= 1 And x <= 2.6 And y <= 200 * (x - 0.5) Then
MsgBox "您选择的类型为B型!"

ElseIf x >= 1 And x <= 2.6 And y >= 200 * (x - 0.5) And y <= 1350 * (x - 4 / 9) Then
MsgBox "您选择的类型为A型!"

ElseIf x >= 1 And x <= 2.6 And y >= 1350 * (x - 4 / 9) And y <= 7000 Then
MsgBox "您选择的类型为O型!"

ElseIf x >= 2.6 And x <= 4 And y <= (1000 / 18) * (x - 0.8) Then
MsgBox "您选择的类型为C型!"

ElseIf x >= 2.6 And x <= 4 And y >= (1000 / 18) * (x - 0.8) And y <= 200 * (x - 0.5) Then
MsgBox "您选择的类型为B型!"

ElseIf x >= 2.6 And x <= 4 And y >= 200 * (x - 0.5) And y <= 1350 * (x - 4 / 9) Then
MsgBox "您选择的类型为A型!"

ElseIf x >= 2.6 And x <= 4 And y >= 1350 * (x - 4 / 9) And y <= 7000 Then
MsgBox "您选择的类型为O型!"

ElseIf x >= 4 And x <= 7.6 And y >= 4800 And y <= 7000 Then
MsgBox "您选择的类型为O型!"

ElseIf x >= 4 And x <= 6 And y >= 100 And y <= (1000 / 18) * (x - 0.8) Then
MsgBox "您选择的类型为C型!"

ElseIf x >= 4 And x <= 6 And y >= (1000 / 18) * (x - 0.8) And y <= 200 * (x - 0.5) Then
MsgBox "您选择的类型为B型!"

ElseIf x >= 4 And x <= 6 And y >= 200 * (x - 0.5) And y <= 4800 Then
MsgBox "您选择的类型为A型!"

ElseIf x >= 6 And x <= 12 And y >= 100 And y <= (250 / 7) * (x - 16 / 5) Then
MsgBox "您选择的类型为D型!"

ElseIf x >= 6 And x <= 12 And y <= (500 / 9) * (x - 0.8) And y >= (250 / 7) * (x - 16 / 5) Then
MsgBox "您选择的类型为C型!"

ElseIf x >= 6 And x <= 12 And y >= (500 / 9) * (x - 0.8) And y <= 200 * (x - 0.5) Then
MsgBox "您选择的类型为B型!"

ElseIf x >= 6 And x <= 12 And y >= 200 * (x - 0.5) And y <= 4800 Then
MsgBox "您选择的类型为A型!"

ElseIf x >= 12 And x <= 22 And y >= 3500 And y <= 4800 Then
MsgBox "您选择的类型为A型!"

ElseIf x >= 12 And x <= 18 And y >= 100 And y <= (250 / 7) * (x - 16 / 5) Then
MsgBox "您选择的类型为D型!"

ElseIf x >= 12 And x <= 18 And y >= (250 / 7) * (x - 16 / 5) And y <= (500 / 9) * (x - 0.8) Then
MsgBox "您选择的类型为C型!"

ElseIf x >= 12 And x <= 23 And y >= (500 / 9) * (x - 0.8) Then
MsgBox "您选择的类型为B型!"

ElseIf x >= 23 And x <= 45 And y >= 2800 And y <= 3500 Then
MsgBox "您选择的类型为B型!"

ElseIf x >= 18 And x <= 23 And y >= 100 And y <= 12.5 * (x - 10) Then
MsgBox "您选择的类型为E型!"

ElseIf x >= 18 And x <= 23 And y >= 12.5 * (x - 10) And y <= (250 / 7) * (x - 16 / 5) Then
MsgBox "您选择的类型为D型!"

ElseIf x >= 18 And x <= 23 And y >= (250 / 7) * (x - 16 / 5) And y <= (500 / 9) * (x - 0.8) Then
MsgBox "您选择的类型为C型!"

ElseIf x >= 23 And x <= 37 And y >= (250 / 7) * (x - 16 / 5) And y <= 2450 Then
MsgBox "您选择的类型为C型!"

ElseIf x >= 23 And x <= 37 And y <= (250 / 7) * (x - 16 / 5) And y >= 12.5 * (x - 10) Then
MsgBox "您选择的类型为D型!"

ElseIf x >= 23 And x <= 46 And y >= 100 And y <= 12.5 * (x - 10) Then
MsgBox "您选择的类型为E型!"

ElseIf x >= 37 And x <= 46 And y >= 12.5 * (x - 10) And y <= 1500 Then
MsgBox "您选择的类型为D型!"

ElseIf x >= 37 And x <= 70 And y >= 1500 And y <= 2450 Then
MsgBox "您选择的类型为C型!"

ElseIf x >= 46 And x <= 85 And y >= 12.5 * (x - 10) And y <= 1500 Then
MsgBox "您选择的类型为D型!"

ElseIf x >= 46 And x <= 85 And y >= 100 And y <= (25 / 6) * (x - 22) Then
MsgBox "您选择的类型为F型!"

ElseIf x >= 46 And x <= 85 And y <= 12.5 * (x - 10) And y >= (25 / 6) * (x - 22) Then
MsgBox "您选择的类型为E型!"

ElseIf x >= 85 And x <= 210 And y >= 100 And y <= (25 / 6) * (x - 22) Then
MsgBox "您选择的类型为F型!"

ElseIf x >= 85 And x <= 210 And y >= (25 / 6) * (x - 22) And y <= 1100 Then
MsgBox "您选择的类型为E型!"

ElseIf x >= 85 And x <= 220 And y >= 1100 And y <= 1500 Then
MsgBox "您选择的类型为D型!"

ElseIf x >= 220 And x <= 380 And y >= 700 And y <= 1100 Then
MsgBox "您选择的类型为E型!"

ElseIf x >= 220 And x <= 800 And y >= 100 And y <= 700 Then
MsgBox "您选择的类型为F型!"

Else: MsgBox "您选择的点不在所规定的范围之内，请重新输入!"

End If

End Sub
四． 运行结果截图

五．小结
通过此次作业我学会了如使用Visual Basic编程实现一些简单的数据查找功能，同时，因为图表中的分段很多，做题的时候也使我体会到了耐心和细心的重要性。