WOLFRAM SYSTEMMODELER

CoupledClutches

Drive train with 3 dynamically coupled clutches

Diagram

Wolfram Language

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

Information

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

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 (3)

freqHz

Value: 0.2

Type: Frequency (Hz)

Description: Frequency of sine function to invoke clutch1

T2

Value: 0.4

Type: Time (s)

Description: Time when clutch2 is invoked

T3

Value: 0.9

Type: Time (s)

Description: Time when clutch3 is invoked

Components (13)

J1

Type: Inertia

torque

Type: Torque

clutch1

Type: Clutch

sin1

Type: Sine

step1

Type: Step

J2

Type: Inertia

clutch2

Type: Clutch

J3

Type: Inertia

clutch3

Type: Clutch

J4

Type: Inertia

sin2

Type: Sine

step2

Type: Step

fixed

Type: Fixed