Model {
  Name			  "sldemo_clutch"
  Version		  6.2
  MdlSubVersion		  0
  GraphicalInterface {
    NumRootInports	    0
    NumRootOutports	    8
    Outport {
      BusObject		      ""
      BusOutputAsStruct	      "off"
      Name		      "we"
    }
    Outport {
      BusObject		      ""
      BusOutputAsStruct	      "off"
      Name		      "wv"
    }
    Outport {
      BusObject		      ""
      BusOutputAsStruct	      "off"
      Name		      "w"
    }
    Outport {
      BusObject		      ""
      BusOutputAsStruct	      "off"
      SignalName	      "clutch locked"
      Name		      "Locked Flag"
    }
    Outport {
      BusObject		      ""
      BusOutputAsStruct	      "off"
      Name		      "Lockup Flag"
    }
    Outport {
      BusObject		      ""
      BusOutputAsStruct	      "off"
      Name		      "Break-Apart Flag"
    }
    Outport {
      BusObject		      ""
      BusOutputAsStruct	      "off"
      Name		      "FrictionTorque Required for Lockup"
    }
    Outport {
      BusObject		      ""
      BusOutputAsStruct	      "off"
      Name		      "Max Static  Friction Torque"
    }
    ParameterArgumentNames  ""
    ComputedModelVersion    "1.22"
    NumModelReferences	    0
    NumTestPointedSignals   0
  }
  Description		  "Clutch Lock-Up Simulation \n\nThe clutch system in "
"this example consists of two plates that transmit torque \nbetween the engine"
" and transmission. There are two distinct modes of operation; \nslipping, whe"
"re the two plates have differing angular velocities; and lockup, where \nthe "
"two plates rotate together. Handling the transition between these two modes "
"\npresents a modeling challenge. As the system loses a degree of freedom upon"
" \nlockup, the transmitted torque goes through a step discontinuity. The magn"
"itude \nof the torque drops from the maximum value supported by the friction "
"capacity \nto a value that is necessary to keep the two halves of the system "
"spinning at the \nsame rate. The reverse transition, break-apart, as the torq"
"ue transmitted by the \nclutch plates exceeds the friction capacity, is also "
"challenging.\n\nThere are two methods for solving this type of problem:\n\n* "
"Compute the clutch torque transmitted at all times, and employ this value dir"
"ectly \nin the model \n* Use two different dynamic models and switch between "
"them at the appropriate times\n\nSimulink can model either method. In this ex"
"ample, we describe a simulation for \nthe second method. In the second method"
", switching between two dynamic \nmodels must be performed with care to ensur"
"e that the initialized states of the new \nmodel match the state values immed"
"iately prior to the switch. In either approach, \nSimulink facilitates accura"
"te simulation due to its ability to recognize the precise \nmoments at which "
"transitions between lockup and slipping occur.\n\nIn the demonstration, we us"
"e enabled subsystems to build the clutch model. \nTwo enabled subsystems mode"
"l the clutch dynamics in either the locked or \nunlocked position. After runn"
"ing the simulation, a GUI opens. Checking any of \nthe boxes on the GUI produ"
"ces a plot of any of the selected variables (versus time). \n\nA detailed rev"
"iew of the equations used in this design can be found in \nthe white paper <h"
"ttp://www.mathworks.com/mason/tag/proxy.html?dataid=229&fileid=559 \nUsing Si"
"mulink and Stateflow for Automotive Examples.> Please note\nthat this paper i"
"s based on an older version of Simulink and does not \nuse all the newest blo"
"ck diagramming features in the current version \nof Simulink.\n"
  SavedCharacterEncoding  "US-ASCII"
  PreLoadFcn		  "load sldemo_clutchparam.mat"
  PostLoadFcn		  "sldemo_clutchplot"
  SaveDefaultBlockParams  on
  SampleTimeColors	  off
  LibraryLinkDisplay	  "none"
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  IgnoreBidirectionalLines off
  ShowStorageClass	  off
  ShowTestPointIcons	  on
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  ShowLinearizationAnnotations on
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  CovPath		  "/"
  CovSaveName		  "covdata"
  CovMetricSettings	  "d"
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  CovHtmlReporting	  on
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  CovSaveSingleToWorkspaceVar on
  CovCumulativeVarName	  "covCumulativeData"
  CovCumulativeReport	  off
  CovReportOnPause	  on
  ScopeRefreshTime	  0.035000
  OverrideScopeRefreshTime on
  DisableAllScopes	  off
  DataTypeOverride	  "UseLocalSettings"
  MinMaxOverflowLogging	  "UseLocalSettings"
  MinMaxOverflowArchiveMode "Overwrite"
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  BlockParametersDataTip  on
  BlockDescriptionStringDataTip	off
  ToolBar		  on
  StatusBar		  on
  BrowserShowLibraryLinks off
  BrowserLookUnderMasks	  off
  CloseFcn		  "sldemo_clutchplot Close"
  StartFcn		  "sldemo_clutchplot Start"
  StopFcn		  "if exist ('y')\nsldemo_clutchplot Stop\nend"
  Created		  "Wed Aug 19 15:51:31 1998"
  Creator		  "The MathWorks Inc."
  UpdateHistory		  "UpdateHistoryNever"
  ModifiedByFormat	  "%<Auto>"
  LastModifiedBy	  "batserve"
  ModifiedDateFormat	  "%<Auto>"
  LastModifiedDate	  "Sat Jan 22 19:08:39 2005"
  ModelVersionFormat	  "1.%<AutoIncrement:22>"
  ConfigurationManager	  "none"
  LinearizationMsg	  "none"
  Profile		  off
  ParamWorkspaceSource	  "MATLABWorkspace"
  AccelSystemTargetFile	  "accel.tlc"
  AccelTemplateMakefile	  "accel_default_tmf"
  AccelMakeCommand	  "make_rtw"
  TryForcingSFcnDF	  off
  ExtModeBatchMode	  off
  ExtModeEnableFloating	  on
  ExtModeTrigType	  "manual"
  ExtModeTrigMode	  "oneshot"
  ExtModeTrigPort	  "1"
  ExtModeTrigElement	  "any"
  ExtModeTrigDuration	  1000
  ExtModeTrigDurationFloating "auto"
  ExtModeTrigHoldOff	  0
  ExtModeTrigDelay	  0
  ExtModeTrigDirection	  "rising"
  ExtModeTrigLevel	  0
  ExtModeArchiveMode	  "off"
  ExtModeAutoIncOneShot	  off
  ExtModeIncDirWhenArm	  off
  ExtModeAddSuffixToVar	  off
  ExtModeWriteAllDataToWs off
  ExtModeArmWhenConnect	  off
  ExtModeSkipDownloadWhenConnect off
  ExtModeLogAll		  on
  ExtModeAutoUpdateStatusClock off
  BufferReuse		  on
  StrictBusMsg		  "None"
  ProdHWDeviceType	  "32-bit Generic"
  ShowModelReferenceBlockVersion off
  ShowModelReferenceBlockIO off
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	      }
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	      Points		      [20, 0]
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	  IconDisplay		  "Port number"
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	  InitialOutput		  "0"
	}
	Block {
	  BlockType		  Outport
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	  Port			  "2"
	  IconDisplay		  "Port number"
	  BusOutputAsStruct	  off
	  InitialOutput		  "0"
	}
	Block {
	  BlockType		  Outport
	  Name			  "unlock"
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	  Port			  "3"
	  IconDisplay		  "Port number"
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	  InitialOutput		  "0"
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	Block {
	  BlockType		  Outport
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	  IconDisplay		  "Port number"
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	  InitialOutput		  "0"
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	    DstPort		    1
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	    DstPort		    2
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	  Branch {
	    Points		    [0, 50]
	    DstBlock		    "Tf"
	    DstPort		    1
	  }
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	  SrcBlock		  "Break Apart\nDetection"
	  SrcPort		  1
	  Points		  [0, 0; 20, 0]
	  Branch {
	    Points		    [0, -35]
	    DstBlock		    "Lockup FSM"
	    DstPort		    2
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	  Branch {
	    DstBlock		    "unlock"
	    DstPort		    1
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	  SrcBlock		  "Lockup\nDetection"
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	    DstBlock		    "Lockup FSM"
	    DstPort		    1
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	  Branch {
	    DstBlock		    "lock"
	    DstPort		    1
	  }
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	  SrcBlock		  "Lockup FSM"
	  SrcPort		  1
	  DstBlock		  "locked"
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	}
	Annotation {
	  Name			  "Clutch Friction Mode Logic"
	  Position		  [256, 21]
	  FontSize		  14
	  FontWeight		  "bold"
	}
      }
    }
    Block {
      BlockType		      SubSystem
      Name		      "Locked"
      Ports		      [1, 1, 1]
      Position		      [230, 265, 355, 355]
      TreatAsAtomicUnit	      on
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      RTWSystemCode	      "Auto"
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	  BlockType		  Inport
	  Name			  "Tin"
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	  Port			  "1"
	  IconDisplay		  "Port number"
	  LatchInput		  off
	}
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	  BlockType		  EnablePort
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	    Name		    "Omega"
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	Name			"clutch slipping"
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      BlockType		      SubSystem
      Name		      "More Info"
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	  Name			  "Model Info"
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	  BlockCM		  "none"
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	  DisplayStringWithTags	  "Model Description:\n-------------------\n%<"
"Description>"
	  MaskDisplayString	  "Model Description:\\n-------------------\\n"
"Clutch Lock-Up Simulation \\n\\nThe clutch system in this example consists of"
" two plates that transmit torque \\nbetween the engine and transmission. Ther"
"e are two distinct modes of operation; \\nslipping, where the two plates have"
" differing angular velocities; and lockup, where \\nthe two plates rotate tog"
"ether. Handling the transition between these two modes \\npresents a modeling"
" challenge. As the system loses a degree of freedom upon \\nlockup, the trans"
"mitted torque goes through a step discontinuity. The magnitude \\nof the torq"
"ue drops from the maximum value supported by the friction capacity \\nto a va"
"lue that is necessary to keep the two halves of the system spinning at the \\"
"nsame rate. The reverse transition, break-apart, as the torque transmitted by"
" the \\nclutch plates exceeds the friction capacity, is also challenging.\\n"
"\\nThere are two methods for solving this type of problem:\\n\\n* Compute the"
" clutch torque transmitted at all times, and employ this value directly \\nin"
" the model \\n* Use two different dynamic models and switch between them at t"
"he appropriate times\\n\\nSimulink can model either method. In this example, "
"we describe a simulation for \\nthe second method. In the second method, swit"
"ching between two dynamic \\nmodels must be performed with care to ensure tha"
"t the initialized states of the new \\nmodel match the state values immediate"
"ly prior to the switch. In either approach, \\nSimulink facilitates accurate "
"simulation due to its ability to recognize the precise \\nmoments at which tr"
"ansitions between lockup and slipping occur.\\n\\nIn the demonstration, we us"
"e enabled subsystems to build the clutch model. \\nTwo enabled subsystems mod"
"el the clutch dynamics in either the locked or \\nunlocked position. After ru"
"nning the simulation, a GUI opens. Checking any of \\nthe boxes on the GUI pr"
"oduces a plot of any of the selected variables (versus time). \\n\\nA detaile"
"d review of the equations used in this design can be found in \\nthe white pa"
"per <http://www.mathworks.com/mason/tag/proxy.html?dataid=229&fileid=559 \\nU"
"sing Simulink and Stateflow for Automotive Examples.> Please note\\nthat this"
" paper is based on an older version of Simulink and does not \\nuse all the n"
"ewest block diagramming features in the current version \\nof Simulink.\\n"
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	  SourceBlockDiagram	  "sldemo_clutch"
	  TagMaxNumber		  "20"
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	  Name			  "Tfmaxk"
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	  IconDisplay		  "Port number"
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	}
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	  BlockType		  Inport
	  Name			  "Tin"
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	  Port			  "2"
	  IconDisplay		  "Port number"
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	}
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	  BlockType		  EnablePort
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	  NamePlacement		  "alternate"
	  IconShape		  "round"
	  Inputs		  "||+--"
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	  BlockType		  Gain
	  Name			  "Engine\nDamping"
	  Position		  [180, 125, 250, 155]
	  Orientation		  "left"
	  Gain			  "be"
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	  BlockType		  Gain
	  Name			  "Engine\nInertia"
	  Position		  [185, 50, 250, 80]
	  Gain			  "1/Ie"
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	  Name			  "Engine\nIntegrator"
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	  ShowStatePort		  on
	  IgnoreLimit		  off
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	  BlockType		  Goto
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	  Position		  [375, 253, 460, 277]
	  ShowName		  off
	  GotoTag		  "unlocked_wv"
	  TagVisibility		  "global"
	}
	Block {
	  BlockType		  Product
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	  Ports			  [2, 1]
	  Position		  [75, 198, 105, 222]
	}
	Block {
	  BlockType		  Sum
	  Name			  "V_Sum"
	  Ports			  [2, 1]
	  Position		  [140, 200, 160, 220]
	  NamePlacement		  "alternate"
	  IconShape		  "round"
	  Inputs		  "|+-"
	}
	Block {
	  BlockType		  Gain
	  Name			  "Vehicle\nDamping"
	  Position		  [190, 285, 250, 315]
	  Orientation		  "left"
	  Gain			  "bv"
	}
	Block {
	  BlockType		  Gain
	  Name			  "Vehicle\nInertia"
	  Position		  [180, 193, 240, 227]
	  Gain			  "1/Iv"
	}
	Block {
	  BlockType		  Integrator
	  Name			  "Vehicle\nIntegrator"
	  Ports			  [2, 1, 0, 0, 1]
	  Position		  [345, 195, 380, 250]
	  NamePlacement		  "alternate"
	  InitialConditionSource  "external"
	  ShowStatePort		  on
	  IgnoreLimit		  off
	}
	Block {
	  BlockType		  Sum
	  Name			  "W_Slip"
	  Ports			  [2, 1]
	  Position		  [455, 130, 475, 150]
	  NamePlacement		  "alternate"
	  IconShape		  "round"
	  Inputs		  "|+-"
	}
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	  BlockType		  Signum
	  Name			  "slip direction"
	  Position		  [75, 333, 105, 357]
	  Orientation		  "left"
	}
	Block {
	  BlockType		  From
	  Name			  "w0"
	  Position		  [270, 223, 330, 247]
	  GotoTag		  "locked_w"
	}
	Block {
	  BlockType		  From
	  Name			  "w0 "
	  Position		  [270, 78, 330, 102]
	  GotoTag		  "locked_w"
	}
	Block {
	  BlockType		  Outport
	  Name			  "we"
	  Position		  [485, 73, 515, 87]
	  IconDisplay		  "Port number"
	  BusOutputAsStruct	  off
	  InitialOutput		  "0"
	}
	Block {
	  BlockType		  Outport
	  Name			  "wv"
	  Position		  [485, 218, 515, 232]
	  Port			  "2"
	  IconDisplay		  "Port number"
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	  InitialOutput		  "0"
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	  Points		  [-35, 0]
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	  SrcPort		  state
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      Position		      [450, 87, 480, 103]
      IconDisplay	      "Port number"
      BusOutputAsStruct	      off
      InitialOutput	      "0"
    }
    Block {
      BlockType		      Outport
      Name		      "wv"
      Position		      [450, 132, 480, 148]
      Port		      "2"
      IconDisplay	      "Port number"
      BusOutputAsStruct	      off
      InitialOutput	      "0"
    }
    Block {
      BlockType		      Outport
      Name		      "w"
      Position		      [450, 302, 480, 318]
      Port		      "3"
      IconDisplay	      "Port number"
      BusOutputAsStruct	      off
      InitialOutput	      "0"
    }
    Block {
      BlockType		      Outport
      Name		      "Locked Flag"
      Position		      [450, 407, 480, 423]
      Port		      "4"
      IconDisplay	      "Port number"
      BusOutputAsStruct	      off
      InitialOutput	      "0"
    }
    Block {
      BlockType		      Outport
      Name		      "Lockup Flag"
      Position		      [450, 442, 480, 458]
      Port		      "5"
      IconDisplay	      "Port number"
      BusOutputAsStruct	      off
      InitialOutput	      "0"
    }
    Block {
      BlockType		      Outport
      Name		      "Break-Apart Flag"
      Position		      [450, 477, 480, 493]
      Port		      "6"
      IconDisplay	      "Port number"
      BusOutputAsStruct	      off
      InitialOutput	      "0"
    }
    Block {
      BlockType		      Outport
      Name		      "FrictionTorque\nRequired for Lockup"
      Position		      [450, 512, 480, 528]
      Port		      "7"
      IconDisplay	      "Port number"
      BusOutputAsStruct	      off
      InitialOutput	      "0"
    }
    Block {
      BlockType		      Outport
      Name		      "Max Static \nFriction Torque"
      Position		      [170, 517, 200, 533]
      Port		      "8"
      IconDisplay	      "Port number"
      BusOutputAsStruct	      off
      InitialOutput	      "0"
    }
    Line {
      SrcBlock		      "Friction Mode Logic"
      SrcPort		      3
      DstBlock		      "Break-Apart Flag"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Engine\nTorque"
      SrcPort		      1
      Points		      [10, 0]
      Branch {
	Points			[0, 0]
	Branch {
	  DstBlock		  "Locked"
	  DstPort		  1
	}
	Branch {
	  Points		  [0, 125]
	  DstBlock		  "Friction Mode Logic"
	  DstPort		  1
	}
      }
      Branch {
	Points			[0, 0; 0, -170]
	DstBlock		"Unlocked"
	DstPort			2
      }
    }
    Line {
      SrcBlock		      "Friction\nModel"
      SrcPort		      1
      Points		      [10, 0; 0, -365]
      DstBlock		      "Unlocked"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Unlocked"
      SrcPort		      2
      DstBlock		      "wv"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Unlocked"
      SrcPort		      1
      DstBlock		      "we"
      DstPort		      1
    }
    Line {
      Name		      "clutch locked"
      SrcBlock		      "Friction Mode Logic"
      SrcPort		      1
      Points		      [60, 0]
      Branch {
	DstBlock		"Locked Flag"
	DstPort			1
      }
      Branch {
	Points			[0, -175; -105, 0; 0, 0]
	Branch {
	  DstBlock		  "Logical\nOperator9"
	  DstPort		  1
	}
	Branch {
	  DstBlock		  "Locked"
	  DstPort		  enable
	}
      }
    }
    Line {
      SrcBlock		      "Friction Mode Logic"
      SrcPort		      2
      DstBlock		      "Lockup Flag"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Friction Mode Logic"
      SrcPort		      4
      DstBlock		      "FrictionTorque\nRequired for Lockup"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Locked"
      SrcPort		      1
      DstBlock		      "w"
      DstPort		      1
    }
    Line {
      Name		      "clutch slipping"
      Labels		      [0, 0]
      SrcBlock		      "Logical\nOperator9"
      SrcPort		      1
      DstBlock		      "Unlocked"
      DstPort		      enable
    }
    Line {
      SrcBlock		      "Friction\nModel"
      SrcPort		      2
      Points		      [0, 0; 10, 0]
      Branch {
	DstBlock		"Friction Mode Logic"
	DstPort			2
      }
      Branch {
	Points			[0, 20]
	DstBlock		"Max Static \nFriction Torque"
	DstPort			1
      }
    }
    Line {
      SrcBlock		      "Clutch\nPedal"
      SrcPort		      1
      DstBlock		      "Friction\nModel"
      DstPort		      1
    }
    Annotation {
      Name		      "Clutch Simulation\nA Demonstration of Enabled S"
"ubsystems"
      Position		      [295, 16]
      VerticalAlignment	      "top"
      FontSize		      14
      FontWeight	      "bold"
    }
  }
}