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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

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.

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

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 Description: 'input Real' as connector
	mode	Type: RealInput Description: 'input Real' as connector
	gear	Type: RealOutput Description: 'output Real' as connector
	toClutch	Type: BooleanOutput Description: 'output Boolean' as connector

Components (33)

	stateGraphRoot	Type: StateGraphRoot Description: Root of a StateGraph (has to be present on the highest level of a StateGraph)
	gear1	Type: InitialStepWithSignal Description: Initial step (= step that is active when simulation starts). Connector 'active' is true when the step is active
	gearR	Type: StepWithSignal Description: Ordinary step (= step that is not active when simulation starts). Connector 'active' is true when the step is active
	gear2	Type: StepWithSignal Description: Ordinary step (= step that is not active when simulation starts). Connector 'active' is true when the step is active
	changeR1	Type: ClutchGearSynch Description: State graph based gear shift synchronizer.
	change12	Type: ClutchGearSynch Description: State graph based gear shift synchronizer.
	change23	Type: ClutchGearSynch Description: State graph based gear shift synchronizer.
	gear3	Type: StepWithSignal Description: Ordinary step (= step that is not active when simulation starts). Connector 'active' is true when the step is active
	change34	Type: ClutchGearSynch Description: State graph based gear shift synchronizer.
	gear4	Type: StepWithSignal Description: Ordinary step (= step that is not active when simulation starts). Connector 'active' is true when the step is active
	change45	Type: ClutchGearSynch Description: State graph based gear shift synchronizer.
	gear5	Type: StepWithSignal Description: Ordinary step (= step that is not active when simulation starts). Connector 'active' is true when the step is active
	change1R	Type: ClutchGearSynch Description: State graph based gear shift synchronizer.
	change21	Type: ClutchGearSynch Description: State graph based gear shift synchronizer.
	change32	Type: ClutchGearSynch Description: State graph based gear shift synchronizer.
	change43	Type: ClutchGearSynch Description: State graph based gear shift synchronizer.
	change54	Type: ClutchGearSynch Description: State graph based gear shift synchronizer.
	lessThreshold1	Type: LessThreshold Description: Output y is true, if input u is less than threshold
	greaterThreshold1	Type: GreaterThreshold Description: Output y is true, if input u is greater than threshold
	greaterThreshold2	Type: GreaterThreshold Description: Output y is true, if input u is greater than threshold
	greaterThreshold3	Type: GreaterThreshold Description: Output y is true, if input u is greater than threshold
	greaterThreshold4	Type: GreaterThreshold Description: Output y is true, if input u is greater than threshold
	lessThreshold2	Type: LessThreshold Description: Output y is true, if input u is less than threshold
	lessThreshold3	Type: LessThreshold Description: Output y is true, if input u is less than threshold
	lessThreshold4	Type: LessThreshold Description: Output y is true, if input u is less than threshold
	lessThreshold5	Type: LessThreshold Description: Output y is true, if input u is less than threshold
	greaterThreshold5	Type: GreaterThreshold Description: Output y is true, if input u is greater than threshold
	booleanToReal2	Type: BooleanToReal Description: Convert Boolean to Real signal
	booleanToReal3	Type: BooleanToReal Description: Convert Boolean to Real signal
	booleanToReal4	Type: BooleanToReal Description: Convert Boolean to Real signal
	booleanToReal5	Type: BooleanToReal Description: Convert Boolean to Real signal
	booleanToReal6	Type: BooleanToReal Description: Convert Boolean to Real signal
	booleanToReal1	Type: BooleanToReal Description: Convert Boolean to Real signal

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).