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Title:
MOTOR CONTROLLER
Document Type and Number:
Japanese Patent JP2001298992
Kind Code:
A
Abstract:

To correct offset of the drive current of a motor.

An offset amount calculating section 14 calculates the offset amount (Iuofs, Ivofs, Iwofs) of the drive current (Iu, Iv, Iw) of a motor. A drive signal correction section 18 corrects offset of the drive current (Iu, Iv, Iw) by correcting the duty ratio of a drive signal (Suo, Svo, Swo), based on the offset amount (Iuofs, Ivofs, Iwofs).


Inventors:
SATO EIJI
OTANI HIROKI
Application Number:
JP2000000116657
Publication Date:
October 26, 2001
Filing Date:
April 18, 2000
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
TOYOTA CENTRAL RES & DEV
International Classes:
H02M7/48; H02P6/06; H02P6/08; H02P6/10; H02P6/12; H02P21/05; H02P21/22; H02P23/04; H02P27/06; H02P27/08; (IPC1-7): H02P7/63; H02M7/48; H02P6/10
Domestic Patent References:
JPH04134196A1992-05-08
JPH07170799A1995-07-04
JPH06121573A1994-04-28
JPH0643191A1994-02-18
JPS6430485A1989-02-01
JPH04134197A1992-05-08
Attorney, Agent or Firm:
吉田 研二 (外2名)