Title:
MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/058340
Kind Code:
A1
Abstract:
According to the present invention, a microcomputer of a VVT controller rotationally drives an electric motor of a VVT mechanism, which is provided with a stopper that regulates the rotation angle, through speed feedback control. At this time, when the absolute value of the deviation between a target rotation speed and the actual rotation speed of the electric motor remains within a predetermined range for a predetermined time, the microcomputer of the VVT controller determines that the rotation angle of a rotating body is being regulated by the stopper. When the microcomputer of the VVT controller determines that the rotation angle of the rotating body is being regulated by the stopper, the microcomputer of the VVT controller limits the current supplied to the electric motor.
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Inventors:
JITSUISHI MAKOTO (JP)
HANO MASAKI (JP)
HANO MASAKI (JP)
Application Number:
PCT/JP2022/031404
Publication Date:
April 13, 2023
Filing Date:
August 19, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02P29/032; F02D13/02
Foreign References:
| JP2019086002A | 2019-06-06 | |||
| JP2007199994A | 2007-08-09 |
Attorney, Agent or Firm:
OGAWA, Moriaki et al. (JP)
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