WOLFRAM SYSTEM MODELER
TCUTransmission control unit that controls the gears and transmission clutch based on engine speed (rpm), vehicle speed (km/h), and desired driving direction (−1 = reverse, 0 = neutral, 1 = forward). |
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Diagram
Wolfram Language
In[1]:=
SystemModel["IndustryExamples.AutomotiveTransportation.Driveline.Components.TransmissionPackage.Utilities.TCU"]
Out[1]:=
Information
This model is a simple implementation of a transmission control unit that controls the gears and transmission clutch based on engine speed (rpm), vehicle speed (km/h), and desired driving direction (−1 = reverse, 0 = neutral, 1 = forward).
Parameters (2)
| gearSwitch |
Value: {24.135, 40.225, 64.36, 72.405} Type: Real[4] |
|---|---|
| clutchLock |
Value: 900 Type: Real (1/min) Description: Engine speed threshold where clutch signal equals 1 |
Connectors (5)
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clutchNormalizedForce |
Type: RealOutput Description: 'output Real' as connector |
|---|---|---|
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engineSpeed |
Type: RealInput Description: 'input Real' as connector |
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mode |
Type: RealInput Description: 'input Real' as connector |
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vehicleSpeed |
Type: RealInput Description: 'input Real' as connector |
|
gear |
Type: RealOutput Description: 'output Real' as connector |
Components (8)
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lockDiff |
Type: Add Description: Output the sum of the two inputs |
|---|---|---|
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lockThreshold |
Type: Constant Description: Generate constant signal of type Real |
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lockLimiter |
Type: Limiter Description: Limit the range of a signal |
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absMode |
Type: Abs Description: Output the absolute value of the input |
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lockFn |
Type: EngineSpeedClutch Description: Model of the relationship between the engine speed and the clutch signal in case the engine speed falls below a given threshold. |
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currentGear |
Type: GearSelect Description: State graph based model that is responsible for the automatic selection and change of gears in the TCU. |
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clutchFirstOrder |
Type: ClutchForceDynamics Description: Dynamics to ensure valid clutch state during gear changes |
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clutchProduct |
Type: Product Description: Output product of the two inputs |
Used in Components (1)
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IndustryExamples.AutomotiveTransportation.Driveline.Components.TransmissionPackage Model of an automatic transmission using a TCU, a clutch, and a gearbox. |