modelCoupledClutches

Drive train with 3 dynamically coupled clutches

Extends from Modelica.Icons.Example (Icon for runnable examples).

Information

This example demonstrates how variable structure drive trains are handled. The drive train consists of 4 inertias and 3 clutches, where the clutches are controlled by input signals. The system has 2^3=8 different configurations and 3^3 = 27 different states (every clutch may be in forward sliding, backward sliding or locked mode when the relative angular velocity is zero). By invoking the clutches at different time instances, the switching of the configurations can be studied.

Simulate the system for 1.2 seconds with the following initial values:
J1.w = 10.

Plot the following variables:
angular velocities of inertias (J1.w, J2.w, J3.w, J4.w), frictional torques of clutches (clutchX.tau), frictional mode of clutches (clutchX.mode) where mode = -1/0/+1 means backward sliding, locked, forward sliding.

Parameters

TypeNameDefaultDescription
SI.Frequencyf0.2Frequency of sine function to invoke clutch1
SI.TimeT20.4Time when clutch2 is invoked
SI.TimeT30.9Time when clutch3 is invoked

Components

TypeNameDefaultDescription
Rotational.Components.InertiaJ1
Rotational.Sources.Torquetorque
Rotational.Components.Clutchclutch1
Modelica.Blocks.Sources.Sinesin1
Modelica.Blocks.Sources.Stepstep1
Rotational.Components.InertiaJ2
Rotational.Components.Clutchclutch2
Rotational.Components.InertiaJ3
Rotational.Components.Clutchclutch3
Rotational.Components.InertiaJ4
Modelica.Blocks.Sources.Sinesin2
Modelica.Blocks.Sources.Stepstep2
Rotational.Components.Fixedfixed