APS Excellence in Physics Education Award
November 2019

Science SPORE Prize
November 2011

The Open Source Physics Project is supported by NSF DUE-0442581.

## Computer Program Detail Page

Fixed Torque Dynamo and Motor Model
written by Wolfgang Christian
The Fixed Torque Dynamo and Motor Model solves the coupled differential equations for an electric motor driven by a dynamo (generator).  The model can be used as to illustrate elementary instabilities or bifurcations discussed in courses about nonlinear oscillators and dynamical systems.  When the dynamo is driven at constant torque, chaotic reversals of the generated current and of the angular rotation of the motor are observed.  The main window displays the dynamo angular velocity ?1, motor angular velocity ?2 and current I time series and a second window displays the phase space.  The stator current Is (A), torque T (N•m), and resistance R (ohm) are adjustable.

The Fixed Torque Dynamo and Motor Model was created using the Easy Java Simulations (EJS) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double click the ejs_chaos_FixedTorqueDynamoAndMotor.jar file to run the program if Java is installed.

Please note that this resource requires at least version 1.5 of Java (JRE).
Subjects Levels Resource Types
Electricity & Magnetism
- Electromagnetic Induction
= Motors and Generators
- Electromotive Force and Current
- Magnetic Materials
Mathematical Tools
- Differential Equations
Modern Physics
- Chaos & Non-linear Dynamics
- Instructional Material
= Simulation
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- Learners
- Educators
- application/java
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Access Rights:
Free access
This material is released under a GNU General Public License Version 3 license.
Rights Holder:
Wolfgang Christian
Record Cloner:
Metadata instance created November 3, 2011 by Wolfgang Christian
Record Updated:
June 6, 2014 by Andreu Glasmann
Last Update
when Cataloged:
November 4, 2011
ComPADRE is beta testing Citation Styles!

AIP Format
W. Christian, Computer Program FIXED TORQUE DYNAMO AND MOTOR MODEL (2011), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11528&DocID=2451).
AJP/PRST-PER
W. Christian, Computer Program FIXED TORQUE DYNAMO AND MOTOR MODEL (2011), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11528&DocID=2451>.
APA Format
Christian, W. (2011). Fixed Torque Dynamo and Motor Model [Computer software]. Retrieved June 21, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11528&DocID=2451
Chicago Format
Christian, Wolfgang. "Fixed Torque Dynamo and Motor Model." https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11528&DocID=2451 (accessed 21 June 2024).
MLA Format
Christian, Wolfgang. Fixed Torque Dynamo and Motor Model. Computer software. 2011. Java (JRE) 1.5. 21 June 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11528&DocID=2451>.
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@misc{ Author = "Wolfgang Christian", Title = {Fixed Torque Dynamo and Motor Model}, Month = {November}, Year = {2011} }
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%A Wolfgang Christian %T Fixed Torque Dynamo and Motor Model %D November 4, 2011 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11528&DocID=2451 %O application/java

EndNote Export Format

%0 Computer Program %A Christian, Wolfgang %D November 4, 2011 %T Fixed Torque Dynamo and Motor Model %8 November 4, 2011 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11528&DocID=2451

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### Fixed Torque Dynamo and Motor Model:

Is Based On Easy Java Simulations Modeling and Authoring Tool

The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Fixed Torque Dynamo and Motor Model.

relation by Wolfgang Christian

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