📄 am_sys5.mdl
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Model {
Name "am_sys5"
Version 3.00
SimParamPage "Solver"
SampleTimeColors off
InvariantConstants off
WideVectorLines off
ShowLineWidths off
ShowPortDataTypes off
StartTime "0.0"
StopTime "999999"
SolverMode "Auto"
Solver "ode45"
RelTol "1e-3"
AbsTol "1e-3"
Refine "1"
MaxStep "0.001"
InitialStep "auto"
FixedStep "auto"
MaxOrder 5
OutputOption "RefineOutputTimes"
OutputTimes "[]"
LoadExternalInput off
ExternalInput "[t, u]"
SaveTime off
TimeSaveName "tout"
SaveState off
StateSaveName "xout"
SaveOutput off
OutputSaveName "yout"
LoadInitialState off
InitialState "xInitial"
SaveFinalState off
FinalStateName "xFinal"
SaveFormat "Matrix"
LimitMaxRows off
MaxRows "1000"
Decimation "1"
AlgebraicLoopMsg "warning"
MinStepSizeMsg "warning"
UnconnectedInputMsg "warning"
UnconnectedOutputMsg "warning"
UnconnectedLineMsg "warning"
InheritedTsInSrcMsg "warning"
IntegerOverflowMsg "warning"
UnnecessaryDatatypeConvMsg "none"
Int32ToFloatConvMsg "warning"
SignalLabelMismatchMsg "none"
ConsistencyChecking "off"
ZeroCross on
SimulationMode "normal"
BlockDataTips on
BlockParametersDataTip on
BlockAttributesDataTip off
BlockPortWidthsDataTip off
BlockDescriptionStringDataTip off
BlockMaskParametersDataTip off
ToolBar on
StatusBar on
BrowserShowLibraryLinks off
BrowserLookUnderMasks off
OptimizeBlockIOStorage on
BufferReuse on
BooleanDataType off
RTWSystemTargetFile "grt.tlc"
RTWInlineParameters off
RTWRetainRTWFile off
RTWTemplateMakefile "grt_default_tmf"
RTWMakeCommand "make_rtw"
RTWGenerateCodeOnly off
ExtModeMexFile "ext_comm"
ExtModeBatchMode off
ExtModeTrigType "manual"
ExtModeTrigMode "oneshot"
ExtModeTrigPort "1"
ExtModeTrigElement "any"
ExtModeTrigDuration 1000
ExtModeTrigHoldOff 0
ExtModeTrigDelay 0
ExtModeTrigDirection "rising"
ExtModeTrigLevel 0
ExtModeArchiveMode "off"
ExtModeAutoIncOneShot off
ExtModeIncDirWhenArm off
ExtModeAddSuffixToVar off
ExtModeWriteAllDataToWs off
ExtModeArmWhenConnect off
Created "Wed Jan 05 22:27:45 2000"
UpdateHistory "UpdateHistoryNever"
ModifiedByFormat "%<Auto>"
ModifiedDateFormat "%<Auto>"
LastModifiedDate "Wed Jan 05 22:28:21 2000"
ModelVersionFormat "1.%<AutoIncrement:1>"
ConfigurationManager "none"
BlockDefaults {
Orientation "right"
ForegroundColor "black"
BackgroundColor "white"
DropShadow off
NamePlacement "normal"
FontName "Helvetica"
FontSize 10
FontWeight "normal"
FontAngle "normal"
ShowName on
}
AnnotationDefaults {
HorizontalAlignment "center"
VerticalAlignment "middle"
ForegroundColor "black"
BackgroundColor "white"
DropShadow off
FontName "Helvetica"
FontSize 10
FontWeight "normal"
FontAngle "normal"
}
LineDefaults {
FontName "Helvetica"
FontSize 9
FontWeight "normal"
FontAngle "normal"
}
System {
Name "am_sys5"
Location [40, 85, 556, 383]
Open on
ModelBrowserVisibility off
ModelBrowserWidth 200
ScreenColor "automatic"
PaperOrientation "landscape"
PaperPositionMode "auto"
PaperType "usletter"
PaperUnits "inches"
ZoomFactor "100"
AutoZoom on
ReportName "simulink-default.rpt"
Block {
BlockType ZeroPole
Name "Butterworth\nLP 滤波器"
Position [335, 218, 395, 262]
FontName "宋体"
FontSize 12
Zeros "z"
Poles "p"
Gain "k"
MaskType "buttap"
MaskDescription "Analog Butterworth low pass filter.\n\n(Require"
"s Signal Processing Toolbox)"
MaskHelp "Butterworth low pass filter using MATLAB's butt"
"er command."
MaskPromptString "Cutoff frequency (rad/sec)|Order"
MaskStyleString "edit,edit"
MaskTunableValueString "on,on"
MaskCallbackString "|"
MaskEnableString "on,on"
MaskVisibilityString "on,on"
MaskInitialization "[z,p,k]=buttap(@2); z=@1*z; p=@1*p; k=real(prod"
"(-p)); [num,den]=zp2tf(z,p,k); w=logspace(log10(@1/10),log10(10*@1),20); h=fr"
"eqs(num,den,w); "
MaskDisplay "plot(20*log10(w),20*log10(abs(h)))"
MaskIconFrame on
MaskIconOpaque on
MaskIconRotate "none"
MaskIconUnits "autoscale"
MaskValueString "10|4"
}
Block {
BlockType Product
Name "乘法器"
Ports [2, 1, 0, 0, 0]
Position [205, 74, 235, 96]
FontName "宋体"
FontSize 12
Inputs "2"
SaturateOnIntegerOverflow on
MaskType "乘法器"
MaskDescription "乘法器"
MaskDisplay "plot([0 1],[1 0],[0 1],[0 1]);"
MaskIconFrame on
MaskIconOpaque on
MaskIconRotate "none"
MaskIconUnits "autoscale"
}
Block {
BlockType Product
Name "乘法器1"
Ports [2, 1, 0, 0, 0]
Position [205, 229, 235, 251]
FontName "宋体"
FontSize 12
Inputs "2"
SaturateOnIntegerOverflow on
MaskType "乘法器"
MaskDescription "乘法器"
MaskDisplay "plot([0 1],[1 0],[0 1],[0 1]);"
MaskIconFrame on
MaskIconOpaque on
MaskIconRotate "none"
MaskIconUnits "autoscale"
}
Block {
BlockType Scope
Name "调制后信号波形"
Ports [1, 0, 0, 0, 0]
Position [445, 70, 475, 100]
FontName "宋体"
FontSize 12
Floating off
Location [82, 93, 413, 237]
Open off
NumInputPorts "1"
TickLabels "OneTimeTick"
ZoomMode "on"
List {
ListType AxesTitles
axes1 "%<SignalLabel>"
}
Grid "on"
TimeRange "1.000000"
YMin "-2"
YMax "2"
SaveToWorkspace off
SaveName "ScopeData"
DataFormat "Matrix"
LimitMaxRows on
MaxRows "5000"
Decimation "1"
SampleInput off
SampleTime "0"
}
Block {
BlockType Scope
Name "解调后信号波形"
Ports [1, 0, 0, 0, 0]
Position [445, 225, 475, 255]
FontName "宋体"
FontSize 12
Floating off
Location [248, 314, 579, 454]
Open off
NumInputPorts "1"
TickLabels "OneTimeTick"
ZoomMode "on"
List {
ListType AxesTitles
axes1 "%<SignalLabel>"
}
Grid "on"
TimeRange "1.000000"
YMin "-1"
YMax "1"
SaveToWorkspace off
SaveName "ScopeData"
DataFormat "Matrix"
LimitMaxRows on
MaxRows "5000"
Decimation "1"
SampleInput off
SampleTime "0"
}
Block {
BlockType SignalGenerator
Name "信号发生器\n频率（弧度/秒）"
Position [70, 63, 115, 97]
FontName "宋体"
FontSize 12
WaveForm "sine"
Amplitude "1.000000"
Frequency "10.000000"
Units "rad/sec"
}
Block {
BlockType Sin
Name "载波"
Position [80, 130, 100, 150]
FontName "宋体"
FontSize 12
Amplitude "1"
Frequency "100"
Phase "0"
SampleTime "0.001"
}
Block {
BlockType Scope
Name "载波与\n接收信号的乘积"
Ports [1, 0, 0, 0, 0]
Position [445, 140, 475, 170]
FontName "宋体"
FontSize 12
Floating off
Location [58, 249, 387, 411]
Open off
NumInputPorts "1"
TickLabels "OneTimeTick"
ZoomMode "on"
List {
ListType AxesTitles
axes1 "%<SignalLabel>"
}
Grid "on"
TimeRange "1.000000"
YMin "-2"
YMax "2"
SaveToWorkspace off
SaveName "ScopeData"
DataFormat "Matrix"
LimitMaxRows on
MaxRows "5000"
Decimation "1"
SampleInput off
SampleTime "0"
}
Line {
SrcBlock "信号发生器\n频率（弧度/秒）"
SrcPort 1
DstBlock "乘法器"
DstPort 1
}
Line {
SrcBlock "Butterworth\nLP 滤波器"
SrcPort 1
DstBlock "解调后信号波形"
DstPort 1
}
Line {
SrcBlock "载波"
SrcPort 1
Points [35, 0]
Branch {
Points [0, -50]
DstBlock "乘法器"
DstPort 2
}
Branch {
Points [0, 105]
DstBlock "乘法器1"
DstPort 2
}
}
Line {
SrcBlock "乘法器"
SrcPort 1
Points [20, 0]
Branch {
DstBlock "调制后信号波形"
DstPort 1
}
Branch {
Points [0, 125; -100, 0; 0, 25]
DstBlock "乘法器1"
DstPort 1
}
}
Line {
SrcBlock "乘法器1"
SrcPort 1
Points [70, 0]
Branch {
DstBlock "Butterworth\nLP 滤波器"
DstPort 1
}
Branch {
Points [0, -85]
DstBlock "载波与\n接收信号的乘积"
DstPort 1
}
}
Annotation {
Position [252, 142]
VerticalAlignment "top"
Text "传\n输\n信\n道"
FontName "宋体"
FontSize 12
}
Annotation {
Position [147, 252]
VerticalAlignment "top"
Text "接收端"
FontName "宋体"
FontSize 12
}
Annotation {
Position [337, 67]
VerticalAlignment "top"
Text "Y(t) = X(t)*cos(Wc*t+p)"
FontName "宋体"
FontSize 12
}
Annotation {
Position [167, 62]
VerticalAlignment "top"
Text "X(t)"
FontName "宋体"
FontSize 12
}
Annotation {
Position [92, 42]
VerticalAlignment "top"
Text "调制信号"
FontName "宋体"
FontSize 12
}
Annotation {
Position [72, 172]
VerticalAlignment "top"
Text "cos ( Wc * t + p )\nWc 载波角频率\np 载波初始相"
"位"
FontName "宋体"
FontSize 12
}
Annotation {
Position [262, 17]
VerticalAlignment "top"
Text "同步调制/解调 AM 系统 （ 双边带 DSB ）—— 原理"
FontName "宋体"
FontSize 12
}
Annotation {
Position [287, 97]
VerticalAlignment "top"
Text "发送端"
FontName "宋体"
FontSize 12
}
Annotation {
Position [367, 92]
VerticalAlignment "top"
Text "已调 DSB 信号"
FontName "宋体"
FontSize 12
}
}
}
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