WOLFRAM SYSTEM MODELER

TCU

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).

Diagram

Wolfram Language

In[1]:=
SystemModel["IndustryExamples.AutomotiveTransportation.Driveline.Components.TransmissionPackage.Utilities.TCU"]
Out[1]:=

Information

 

Driveline: TCU

 

Description

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).

View the model diagram for this model.

 

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)

clutchSignal

Type: RealOutput

engineSpeed

Type: RealInput

mode

Type: RealInput

vehicleSpeed

Type: RealInput

gear

Type: RealOutput

Components (9)

add2

Type: Add

const

Type: Constant

limiter1

Type: Limiter

abs1

Type: Abs

clutchSignal1

Type: ClutchSignal

clutchFn1

Type: EngineSpeedClutch

currentGear1

Type: GearSelect

firstOrder1

Type: FirstOrder

booleanToReal1

Type: BooleanToReal

Used in Components (1)

AutomaticTransmission

IndustryExamples.AutomotiveTransportation.Driveline.Components.TransmissionPackage

Model of an automatic transmission using a TCU, a clutch, and a gearbox.