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Controlling the relative orientation between the two magnetic fields of a synchronous motor

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conference contribution
posted on 2001-01-01, 00:00 authored by S Refaat, Saeid Nahavandi
A simple and reliable method for controlling the relative orientation between the two magnetic fields of a permanent magnet synchronous motor is presented. Finding the initial (at motor powering-up time) value of this relative location is essential for the proper operation of the motor. The feedback control loop used finds this initial relative orientation quickly. Further, using the proposed method allows considerable cost saving, as a transducer that is usually used for this purpose can be eliminated. The cost saving is most obvious in the case of linear motors and angle motors with large diameters. The way the problem is posed is an essential part of this work and it is the reason behind the apparent simplicity of the solution. The method relied upon a single sensor, and it has been tested when a relative encoder was used



IEEE International Conference on Systems, Man, and Cybernetics (2001 : Tucson, Ariz.)


3169 - 3174


IEEE Xplore


Tucson, Arizona

Place of publication

Piscataway, N.J.

Start date


End date









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Publication classification

E1.1 Full written paper - refereed

Copyright notice

2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.


F Wang

Title of proceedings

2001 IEEE International Conference on Systems, Man & Cybernetics : e-systems and e-man for cybernetics in cyberspace : October 7-10, 2001, Tucson Convention Center, Tucson, Arizona, United States