Title:
AUTOMATIC ADJUSTMENT OF COMMUTATION DELAY TO IMPROVE EFFICIENCY OF BRUSHLESS DC MOTOR
Document Type and Number:
Japanese Patent JPH06217588
Kind Code:
A
Abstract:
PURPOSE: To provide a circuit for automatically adjusting the delay of commutation so as to get optimum motor efficiency, in the drive circuit of a multiphase DC motor. CONSTITUTION: This circuit has a driver which supplies a drive current to a stator coil that a motor 11 has selected, and further herein a sequencer 13 to control the driver so as to apply the drive current to the selected motor coil is connected. A commutation delay circuit 33 is connected to positively differentiate the sequencer 13, in response to the detection of the event which shows the position by a motor position detecting circuit 18. A circuit which adjusts the delay of the commutation delay circuit between each event and each sequencer commutation gives optimum motor commutation for getting maximum power efficiency.
Inventors:
FURANSESUKO KAROBORANTE
ERUMANNO PEESU
MAAKU II ROOBOO
ERUMANNO PEESU
MAAKU II ROOBOO
Application Number:
JP23609093A
Publication Date:
August 05, 1994
Filing Date:
September 22, 1993
Export Citation:
Assignee:
SGS THOMSON MICROELECTRONICS
International Classes:
H02P6/06; H02P6/10; H02P6/14; (IPC1-7): H02P6/02
Attorney, Agent or Firm:
Kazuo Kobashi (1 person outside)
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