s2_chou.mdl

一个带界面的信号与系统实验系统

      BlockType		      Reference
      Name		      "巴特沃斯低通滤波器"
      Ports		      [1, 1]
      Position		      [350, 162, 415, 218]
      ForegroundColor	      "green"
      DropShadow	      on
      FontSize		      15
      SourceBlock	      "dsparch4/Analog\nFilter Design"
      SourceType	      "Analog Filter Design"
      method		      "Butterworth"
      filttype		      "Lowpass"
      N			      "8"
      Wlo		      "30"
      Whi		      "80"
      Rp		      "2"
      Rs		      "40"
    }
    Block {
      BlockType		      Product
      Name		      "乘法器"
      Ports		      [2, 1]
      Position		      [230, 171, 275, 204]
      ForegroundColor	      "darkGreen"
      DropShadow	      on
      FontSize		      15
    }
    Block {
      BlockType		      Scope
      Name		      "抽样后信号"
      Ports		      [1]
      Position		      [355, 254, 385, 286]
      ForegroundColor	      "red"
      DropShadow	      on
      FontSize		      15
      Location		      [695, 141, 1019, 380]
      Open		      on
      NumInputPorts	      "1"
      ZoomMode		      "xonly"
      List {
	ListType		AxesTitles
	axes1			"%<SignalLabel>"
      }
      List {
	ListType		SelectedSignals
	axes1			""
      }
      SaveName		      "ScopeData4"
      DataFormat	      "StructureWithTime"
    }
    Block {
      BlockType		      DiscretePulseGenerator
      Name		      "抽样脉冲"
      Position		      [35, 213, 80, 247]
      DropShadow	      on
      FontSize		      15
      PulseType		      "Time based"
      Period		      "0.1"
      PulseWidth	      "50"
    }
    Block {
      BlockType		      Scope
      Name		      "抽样脉冲信号"
      Ports		      [1]
      Position		      [135, 214, 165, 246]
      ForegroundColor	      "red"
      DropShadow	      on
      FontSize		      15
      Location		      [359, 468, 683, 707]
      Open		      on
      NumInputPorts	      "1"
      List {
	ListType		AxesTitles
	axes1			"%<SignalLabel>"
      }
      List {
	ListType		SelectedSignals
	axes1			""
      }
      SaveName		      "ScopeData1"
      DataFormat	      "StructureWithTime"
    }
    Block {
      BlockType		      ToWorkspace
      Name		      "环境变量1"
      Position		      [540, 15, 600, 45]
      ForegroundColor	      "blue"
      DropShadow	      on
      FontSize		      15
      VariableName	      "out1"
      MaxDataPoints	      "inf"
      SampleTime	      "-1"
      SaveFormat	      "Structure"
    }
    Block {
      BlockType		      ToWorkspace
      Name		      "环境变量2"
      Position		      [540, 125, 600, 155]
      ForegroundColor	      "blue"
      DropShadow	      on
      FontSize		      15
      VariableName	      "out2"
      MaxDataPoints	      "inf"
      SampleTime	      "-1"
      SaveFormat	      "Structure"
    }
    Block {
      BlockType		      ToWorkspace
      Name		      "环境变量3"
      Position		      [540, 220, 600, 250]
      ForegroundColor	      "blue"
      DropShadow	      on
      FontSize		      15
      VariableName	      "out3"
      MaxDataPoints	      "inf"
      SampleTime	      "-1"
      SaveFormat	      "Structure"
    }
    Block {
      BlockType		      Scope
      Name		      "恢复信号"
      Ports		      [1]
      Position		      [480, 174, 510, 206]
      ForegroundColor	      "red"
      DropShadow	      on
      FontSize		      15
      Location		      [699, 471, 1023, 710]
      Open		      on
      NumInputPorts	      "1"
      ZoomMode		      "xonly"
      List {
	ListType		AxesTitles
	axes1			"%<SignalLabel>"
      }
      List {
	ListType		SelectedSignals
	axes1			""
      }
      SaveName		      "ScopeData3"
      DataFormat	      "StructureWithTime"
    }
    Block {
      BlockType		      Reference
      Name		      "频谱分析"
      Ports		      [1]
      Position		      [320, 60, 350, 90]
      ForegroundColor	      "red"
      DropShadow	      on
      FontName		      "Arial"
      FontSize		      15
      SourceBlock	      "simulink_extras/Additional\nSinks/Power Spectra"
"l\nDensity"
      SourceType	      "Power Spectral Density"
      npts		      "128"
      fftpts		      "512"
      HowOften		      "64"
      sampleT		      "0.1"
    }
    Block {
      BlockType		      ToWorkspace
      Name		      "时间变量"
      Position		      [415, 300, 475, 330]
      ForegroundColor	      "blue"
      DropShadow	      on
      FontSize		      15
      VariableName	      "timeout"
      MaxDataPoints	      "inf"
      SampleTime	      "-1"
      SaveFormat	      "Structure"
    }
    Block {
      BlockType		      Clock
      Name		      "时钟信号"
      Position		      [230, 305, 250, 325]
      DropShadow	      on
      FontSize		      15
      Decimation	      "10"
    }
    Block {
      BlockType		      Scope
      Name		      "输入信号"
      Ports		      [1]
      Position		      [130, 139, 160, 171]
      ForegroundColor	      "red"
      DropShadow	      on
      FontSize		      15
      Location		      [356, 140, 680, 379]
      Open		      on
      NumInputPorts	      "1"
      List {
	ListType		AxesTitles
	axes1			"%<SignalLabel>"
      }
      List {
	ListType		SelectedSignals
	axes1			""
      }
      SaveName		      "ScopeData2"
      DataFormat	      "StructureWithTime"
    }
    Block {
      BlockType		      SignalGenerator
      Name		      "信号源"
      Position		      [35, 60, 65, 90]
      DropShadow	      on
      FontName		      "Arial"
      FontSize		      15
    }
    Line {
      SrcBlock		      "信号源"
      SrcPort		      1
      Points		      [20, 0]
      Branch {
	Points			[0, 80]
	DstBlock		"输入信号"
	DstPort			1
      }
      Branch {
	Points			[0, -45]
	DstBlock		"环境变量1"
	DstPort			1
      }
      Branch {
	Points			[105, 0]
	Branch {
	  DstBlock		  "频谱分析"
	  DstPort		  1
	}
	Branch {
	  Points		  [0, 105]
	  DstBlock		  "乘法器"
	  DstPort		  1
	}
      }
    }
    Line {
      SrcBlock		      "抽样脉冲"
      SrcPort		      1
      Points		      [20, 0]
      Branch {
	DstBlock		"抽样脉冲信号"
	DstPort			1
      }
      Branch {
	Points			[0, -35]
	DstBlock		"乘法器"
	DstPort			2
      }
    }
    Line {
      SrcBlock		      "乘法器"
      SrcPort		      1
      Points		      [20, 0]
      Branch {
	DstBlock		"巴特沃斯低通滤波器"
	DstPort			1
      }
      Branch {
	Points			[0, 80]
	DstBlock		"抽样后信号"
	DstPort			1
      }
      Branch {
	Points			[0, -50]
	DstBlock		"环境变量2"
	DstPort			1
      }
    }
    Line {
      SrcBlock		      "巴特沃斯低通滤波器"
      SrcPort		      1
      Points		      [40, 0]
      Branch {
	DstBlock		"恢复信号"
	DstPort			1
      }
      Branch {
	Points			[0, 45]
	DstBlock		"环境变量3"
	DstPort			1
      }
    }
    Line {
      SrcBlock		      "时钟信号"
      SrcPort		      1
      DstBlock		      "时间变量"
      DstPort		      1
    }
    Annotation {
      Name		      "信号抽样"
      Position		      [93, 320]
      FontName		      "Arial"
      FontSize		      22
      FontWeight	      "bold"
    }
  }
}