- 专利标题: Motor control device, method of estimating initial position of magnetic pole of rotor, and image forming apparatus
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申请号: US16794043申请日: 2020-02-18
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公开(公告)号: US11223309B2公开(公告)日: 2022-01-11
- 发明人: Hiroyuki Yoshikawa , Yuta Tachibana , Yuji Kobayashi , Kazumichi Yoshida , Daichi Suzuki , Harumitsu Fujimori
- 申请人: KONICA MINOLTA, INC.
- 申请人地址: JP Tokyo
- 专利权人: KONICA MINOLTA, INC.
- 当前专利权人: KONICA MINOLTA, INC.
- 当前专利权人地址: JP Tokyo
- 代理机构: Holtz, Holtz & Volek PC
- 优先权: JPJP2019-045591 20190313
- 主分类号: H02P21/18
- IPC分类号: H02P21/18 ; H02P21/22 ; H02P27/12 ; G03G15/00 ; H02P21/34
摘要:
In a motor control device that controls a sensorless-type motor, a controller estimates an initial magnetic pole position of a rotor of a motor by an inductive sensing scheme while sequentially setting a plurality of energization angles. At each of the set energization angles, the controller converts peak values of currents flowing through a plurality of phases of a stator winding into a first current component having an electrical angle that is equal to a corresponding one of the set energization angles and a second current component that is different in electrical angle by 90 degrees from the first current component, to correct the first current component based on the second current component. The controller estimates the initial magnetic pole position of the rotor based on the corrected first current component that is obtained at each of the set energization angles.
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