WOLFRAM SYSTEMMODELER

SimpleGearShift

Simple Gearshift

Diagram

Wolfram Language

In[1]:=
SystemModel["Modelica.Mechanics.Rotational.Examples.SimpleGearShift"]
Out[1]:=

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

This model shows how an automatic gear shift is built up from a planetary gear, a brake and a clutch.

  • In the beginning, the clutch is free and the brake fixes the ring of the planetary. Thus we obtain a gearRatio = 1/(1 + planetary.ratio).
  • At time = 2 s, the brake frees the ring of the planetary, whereas the clutch blocks the ring and the sun. Thus we obtain a gearRatio = 1.

Outputs (3)

wEngine

Default Value: engine.w

Type: AngularVelocity (rad/s)

Description: Speed of engine

wLoad

Default Value: load.w

Type: AngularVelocity (rad/s)

Description: Speed of load

gearRatio

Default Value: wLoad / max(wEngine, 1E-6)

Type: Real

Description: gear ratio load/engine

Components (10)

torqueStep

Type: TorqueStep

engine

Type: Inertia

idealPlanetary

Type: IdealPlanetary

load

Type: Inertia

quadraticSpeedDependentTorque

Type: QuadraticSpeedDependentTorque

clutch

Type: Clutch

brake

Type: Brake

feedback

Type: Feedback

const1

Type: Constant

ramp

Type: Ramp