WOLFRAM SYSTEM MODELER

GearSelect

State graph based model that is responsible for the automatic selection and change of gears in the TCU.

Diagram

Wolfram Language

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

Information

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Driveline: GearSelect

 

Description

This component is based on the Modelica StateGraph library and is responsible for the automatic selection and change of gears in the TCU. Each gear is represented by two states: one state where the gear is active and the transmission clutch is engaged, and one state where the gear is active but the clutch is disengaged. The reason for this is to allow the clutch to disengage before a gear change takes place. Each gear change is modeled using the ClutchGearSynch component and takes place once a given set of conditions is fulfilled.

View the model diagram for this model.

ShowTerms and Conditions of Use

 

Parameters (2)

gearDelay

Value:

Type: Real

Description: Time until new gear is engaged
gearSwitch

Value: {24.135, 40.225, 64.36, 72.405}

Type: Real[4]

Description: Speed at which to switch gears

Connectors (4)

vehicleSpeed

Type: RealInput
mode

Type: RealInput
gear

Type: RealOutput
toClutch

Type: BooleanOutput

Components (33)

stateGraphRoot

Type: StateGraphRoot
gear1

Type: InitialStepWithSignal
gearR

Type: StepWithSignal
gear2

Type: StepWithSignal
changeR1

Type: ClutchGearSynch
change12

Type: ClutchGearSynch
change23

Type: ClutchGearSynch
gear3

Type: StepWithSignal
change34

Type: ClutchGearSynch
gear4

Type: StepWithSignal
change45

Type: ClutchGearSynch
gear5

Type: StepWithSignal
change1R

Type: ClutchGearSynch
change21

Type: ClutchGearSynch
change32

Type: ClutchGearSynch
change43

Type: ClutchGearSynch
change54

Type: ClutchGearSynch
lessThreshold1

Type: LessThreshold
greaterThreshold1

Type: GreaterThreshold
greaterThreshold2

Type: GreaterThreshold
greaterThreshold3

Type: GreaterThreshold
greaterThreshold4

Type: GreaterThreshold
lessThreshold2

Type: LessThreshold
lessThreshold3

Type: LessThreshold
lessThreshold4

Type: LessThreshold
lessThreshold5

Type: LessThreshold
greaterThreshold5

Type: GreaterThreshold
booleanToReal2

Type: BooleanToReal
booleanToReal3

Type: BooleanToReal
booleanToReal4

Type: BooleanToReal
booleanToReal5

Type: BooleanToReal
booleanToReal6

Type: BooleanToReal
booleanToReal1

Type: BooleanToReal

Used in Components (1)

TCU

IndustryExamples.AutomotiveTransportation.Driveline.Components.TransmissionPackage.Utilities

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).