Invention Grant
- Patent Title: Motor control apparatus and image forming apparatus
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Application No.: US16748118Application Date: 2020-01-21
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Publication No.: US11329580B2Publication Date: 2022-05-10
- Inventor: Yasukazu Maeda , Eijiro Ohashi , Takuya Miyashita
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Venable LLP
- Priority: JPJP2019-008599 20190122
- Main IPC: H02P6/00
- IPC: H02P6/00 ; H02P6/14 ; H02P6/185 ; G03G15/00

Abstract:
A motor control apparatus includes: an excitation unit configured to excite a plurality of excitation phases of a motor; a measurement unit configured to measure a physical amount that changes according to an inductance of a plurality of coils that make up the plurality of excitation phases when the plurality of excitation phases are excited; and a control unit configured to control the excitation unit to excite the plurality of excitation phases sequentially, determine a first excitation phase by comparing a measurement value measured by the measurement unit in excitation of each of the plurality of excitation phases with a first threshold, and determine that a rotational position of a rotor of the motor is a rotational position at which the rotor stops when the first excitation phase is excited. The first excitation phase is determined, the control unit stops excitation.
Public/Granted literature
- US20200235684A1 MOTOR CONTROL APPARATUS AND IMAGE FORMING APPARATUS Public/Granted day:2020-07-23
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