- 专利标题: Rotation detector and image forming apparatus
-
申请号: US17854777申请日: 2022-06-30
-
公开(公告)号: US11990856B2公开(公告)日: 2024-05-21
- 发明人: Yuta Tachibana , Hiroyuki Yoshikawa , Kazumichi Yoshida , Satoshi Miyajima , Kouei Cho
- 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: BakerHostetler
- 优先权: JP 21111994 2021.07.06
- 主分类号: H02P21/18
- IPC分类号: H02P21/18 ; H02P6/16 ; H02P21/22
摘要:
A rotation detector includes a motor, a current detector and a hardware processor. The motor includes coils of two or more phases and a rotor. The current detector detects currents flowing in coils of at least two phases among the coils of two or more phases. The hardware processor estimates an initial position of the rotor based on current values of the currents detected by the current detector to start the motor, controls an energization pattern on the phases to rotate and start the motor based on the estimated initial position, and determines whether the rotor stops or is rotating before completing the estimation of the initial position.
公开/授权文献
- US20230008381A1 ROTATION DETECTOR AND IMAGE FORMING APPARATUS 公开/授权日:2023-01-12
信息查询