Title:
METHOD FOR CORRECTING FIELD POSITION ERROR IN ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2018/110538
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a method which makes it possible to simply evaluate the output of an initial position detection signal for a permanent magnet field, along with providing a method for correcting errors that occur in the initial position detection signal. As a means for solving said problem, an MPU (51) obtains a correction value wherein an offset error has been corrected by multiplying a first measurement value or a second measurement value, which are measured for each conduction pattern when an offset error occurs during position detection of a permanent magnet field, by a correction coefficient A and estimates the position of the permanent magnet field on the basis of the correction value.
Inventors:
YAMAMOTO KIYOSHI (JP)
Application Number:
PCT/JP2017/044528
Publication Date:
June 21, 2018
Filing Date:
December 12, 2017
Export Citation:
Assignee:
HOKUTO CONTROL CO LTD (JP)
International Classes:
H02P6/18; H02P6/28
Foreign References:
| JP2015100206A | 2015-05-28 | |||
| JP2010136622A | 2010-06-17 | |||
| US6172498B1 | 2001-01-09 |
Other References:
See also references of EP 3522361A4
Attorney, Agent or Firm:
WATANUKI PATENT SERVICE BUREAU (JP)
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