DocumentCode
795261
Title
Microcomputer Control for Sensorless Brushless Motor
Author
Iizuka, Kenichi ; Uzuhashi, Hideo ; Kano, Minoru ; Endo, Tsunehiro ; Mohri, Katsuo
Author_Institution
Tochigi Works, Hitachi Ltd., 800, Tomita, Ohira-machi, Shimotsuga-gun, Tochigi, Japan.
Issue
3
fYear
1985
fDate
5/1/1985 12:00:00 AM
Firstpage
595
Lastpage
601
Abstract
The microcomputer control of a brushless motor without a shaft position sensor is studied. A method which permits the determination of the permanent magnet rotor position by the back electromotive force (EMF) induced in the stator windings and the starting technique which uses the motor as a synchronous motor at standstill are explained. The motor voltage is chopped by commutator transistors to change the motor speed. The control system consists of a 4-b single-chip microcomputer and two quad-comparators.
Keywords
Brushless motors; Force sensors; Magnetic sensors; Microcomputers; Permanent magnet motors; Rotors; Sensorless control; Shafts; Stator windings; Synchronous motors;
fLanguage
English
Journal_Title
Industry Applications, IEEE Transactions on
Publisher
ieee
ISSN
0093-9994
Type
jour
DOI
10.1109/TIA.1985.349715
Filename
4158031
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