Title:
STARTING METHOD OF SENSORLESS-DRIVE MOTOR
Document Type and Number:
Japanese Patent JPH08322287
Kind Code:
A
Abstract:
PURPOSE: To reduce the starting time of a motor when the motor is started.
CONSTITUTION: Leakage flux which interlinks with a revolution detection sensor is detected and the detection signal is used as a start signal by which a coil to be energized is determined. If a sensorless-drive motor is a three-phase motor, the phase difference between the revolution detection sensor and the coil to be energized is, expressed by an electrical angle, 15°+180°×N (N: integer) or 75°+180°×N (N: integer).
Inventors:
WATABE TOSHIAKI
Application Number:
JP12482895A
Publication Date:
December 03, 1996
Filing Date:
May 24, 1995
Export Citation:
Assignee:
SONY CORP
International Classes:
H02K29/14; H02K29/03; H02P6/06; H02P6/08; H02P6/20; H02P6/21; (IPC1-7): H02P6/20; H02K29/14
Attorney, Agent or Firm:
Akira Koike (2 outside)
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