Title:
MOTOR CONTROL DEVICE AND MAGNETIC-POLE POSITION CALCULATING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/175935
Kind Code:
A1
Abstract:
This motor control device is connected to an angle sensor that outputs a sine-wave signal and a cosine-wave signal that vary in accordance with the magnetic-pole position of a motor, and the motor control device calculates the magnetic-pole position on the basis of the sine-wave signal and the cosine-wave signal output from the angle sensor, and controls the motor by utilizing the calculated magnetic-pole position. The motor control device comprises: a phase-difference computing unit that computes the phase difference between the sine-wave signal and the cosine-wave signal; and a phase-changing unit that, on the basis of the phase difference computed by the phase-difference computing unit, corrects the phases of the sine-wave signal and the cosine wave signal by changing each of the phases by the same amount so that the phase difference after correction will be 90 degrees in electrical angle.
Inventors:
MYOEN KOHEI (JP)
MIKAWA KENTARO (JP)
YAMABE YUKI (JP)
TOYODA TAKURO (JP)
ISOBE JUNKI (JP)
MIKAWA KENTARO (JP)
YAMABE YUKI (JP)
TOYODA TAKURO (JP)
ISOBE JUNKI (JP)
Application Number:
PCT/JP2022/012723
Publication Date:
September 21, 2023
Filing Date:
March 18, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02P29/00
Domestic Patent References:
| WO2020213181A1 | 2020-10-22 |
Foreign References:
| JP2012068114A | 2012-04-05 | |||
| JP2018185287A | 2018-11-22 | |||
| JP2006194861A | 2006-07-27 | |||
| JP2020141529A | 2020-09-03 |
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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