DocumentCode
804293
Title
A Brushless Hall Generator DC Servomotor
Author
Wise, Julius F., Jr. ; Simons, Fred O., Jr.
Author_Institution
South Central Bell, New Orleans, La.
Issue
2
fYear
1974
fDate
5/1/1974 12:00:00 AM
Firstpage
75
Lastpage
77
Abstract
The brushless dc servomotor described consists of two basic components: 1) a brushless dc motor unit featuring a permanent magnet rotor with Hall effect devices for sensing rotor position, and 2) an electronic control package. One important feature of the control package was a nonlinear operational amplifier circuit which eliminated control input deadband and supplied a negative feedback control signal derived from the back emf of the stator windings. The result was a unit with torque versus speed characteristics which very nearly approximate those of the ideal servomotor; an evenly spaced family of negatively sloped straight lines.
Keywords
Brushless DC motors; DC generators; Electronics packaging; Feedback circuits; Hall effect devices; Negative feedback; Operational amplifiers; Rotors; Servomotors; Stator windings;
fLanguage
English
Journal_Title
Industrial Electronics and Control Instrumentation, IEEE Transactions on
Publisher
ieee
ISSN
0018-9421
Type
jour
DOI
10.1109/TIECI.1974.351189
Filename
4158992
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