About DC Motor 3D Simulator Lab
Free app https://play.google.com/store/apps/details?id=com.ionicframework.dcmotorapp835145 Pro app
Free app
https://play.google.com/store/apps/details?id=com.ionicframework.dcmotorapp835145
Pro app
https://play.google.com/store/apps/details?id=com.ionicframework.dcmotorpro785986
About
An open source physics at Singapore simulation based on codes written by Fu-Kwun Hwang and Loo Kang WEE.
more resources can be found here
http://iwant2study.org/ospsg/index.php/interactive-resources/physics/05-electricity-and-magnetism
Introduction
Electric motors turn electricity into motion by exploiting electromagnetic induction. A current-carrying loop that is placed in a magnetic field experiences a turning effect.A simple direct current (DC) motor is illustrated here. ABCD is mounted on an axle PQ. The ends of the wire are connected to a split ring commutator at position X & Y. The commutator rotates with the loop. Two carbon brushes are made to press lightly against the commutators.
The motor features a external magnet (called the stator because it’s fixed in place) and an turning coil of wire called an armature ( rotor or coil, because it rotates). The armature, carrying current provided by the battery, is an electromagnet, because a current-carrying wire generates a magnetic field; invisible magnetic field lines are circulating all around the wire of the armature.
The key to producing motion is positioning the electromagnet within the magnetic field of the permanent magnet (its field runs from its north to south poles). The armature experiences a force described by the left hand rule. This interplay of magnetic fields and moving charged particles (the electrons in the current) results in the magnetic force (depicted by the green arrows) that makes the armature spin because of the torque. Use the slider current I to see what happens when the flow of current is reversed. The checkbox current flow & electron flow alows different visualization since I = d(Q)/dt and Q= number of charge*e. The Play & Pause button allows freezing the 3D view for visualizing these forces, for checking for consistency with the left hand rule .
Interesting Fact
This simulation has real 3D perspective view and is targeted for O level Physics education, has a split-ring commutator designed inside it.
The purpose of the commutator is to reverses the direction of the current in the loop ABCD for every half a cycle.
A swing back and fro motion (maybe θ = 90o increase to 270o and decrease back to 90o) is all you would get out of this motor if it weren't for the split-ring commutator — the circular metal device split into parts (shown here in teal with a gap of β2) that connects the armature to the circuit.
Acknowledgement
My sincere gratitude for the tireless contributions of Francisco Esquembre, Fu-Kwun Hwang, Wolfgang Christian, Félix Jesús Garcia Clemente, Anne Cox, Andrew Duffy, Todd Timberlake and many more in the Open Source Physics community.
Network Learn together?
FaceBook Fan Page: https://www.facebook.com/Open-Source-Physics-Easy-Java-Simulation-Tracker-132622246810575/
Twitter: https://twitter.com/lookang
YouTube: https://www.youtube.com/user/lookang/videos
Blog: http://weelookang.blogspot.sg/
Digital Library: http://iwant2study.org/ospsg/
Previous Versions
Here you can find the changelog of DC Motor 3D Simulator Lab since it was posted on our website on 2016-12-29 14:00:09.
The latest version is 0.0.4 and it was updated on 2024-04-22 12:36:56. See below the changes in each version.
DC Motor 3D Simulator Lab version 0.0.4
Updated At: 2017-06-28
Changes: added new features such as
isometric view
front view
side view
top view
collapse control into a combined drop down menu
fullscreen added, drag down screen to activate
DC Motor 3D Simulator Lab version 0.0.2
Updated At: 2016-10-04
Changes: the charges in the battery circuit is now 6 times faster, hopefully 'better animation style that current is flowing in the coil' in achieved.,the 'current particles' is now smaller .,zooming can be achieve via mouse scrolling on PC, on mobile chrome, 2 finger pinching also can zoom.,on the mobile app version, zooming cannot be done yet, i have not be able to figure out how to enable zooming on app.
Disclaimer
Official Google Play Link
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