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Article #7819Modelling a DC motor
From: andyc
Date: Tue, 06 Feb 1990 13:36
Date: Tue, 06 Feb 1990 13:36
26 lines
1383 bytes
1383 bytes
I am modelling a system which includes a D.C. electric motor, the motor speed is regulated by turning the motor on and off at a given rate, determined by a feedback system. What I *desperately* need is equations which model the operation of the motor, namely: 1. What is the net rate of acceleration of the motor when current is applied? 2. What is the net rate of deceleration when current is removed? 3. How do I determine how much the motor 'rolls back' after stopping? I know about simple mechanics, such as v = u + at. What I'm looking for are the effects of back emf, friction, inertia etc. Any help anyone can give on this stuff will be greatly appreciated. --------------------------------------------------------------------------- Andy Coombes Phone: (0904) 432764 Department of Computer Science, Janet: andyc@uk.ac.york.minster University of York BITNET etc. I haven't the foggiest Heslington, YORK
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!ukc!reading!minster!andyc From: andyc@minster.york.ac.uk Newsgroups: sci.physics,sci.electronics,sci.research Subject: Modelling a DC motor Message-ID: <634311382.23809@minster.york.ac.uk> Date: 6 Feb 90 13:36:23 GMT Organization: Department of Computer Science, University of York, England Lines: 26