- Patent Title: Control device, optical device, control method, and storage medium
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Application No.: US15975194Application Date: 2018-05-09
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Publication No.: US10715064B2Publication Date: 2020-07-14
- Inventor: Hirofumi Honda
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. IP Division
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@669919f8
- Main IPC: H02P8/18
- IPC: H02P8/18 ; H02P6/15 ; H02P8/22

Abstract:
A control device for controlling a stepping motor includes at least one processor which function as a control unit configured to control the stepping motor through a first control method or a second control method by using a control signal, wherein the memory configured to store a plurality of locus data indicating a relationship between an advance angle and a rotation speed of the stepping motor at each waveform of the control signal, the advance angle being a phase difference between a phase corresponding to a rotation position of the stepping motor and a phase of the control signal, and wherein the control unit select one piece of locus data from the plurality of locus data stored in the memory before switching a control method between the first control method and the second control method.
Public/Granted literature
- US20180331640A1 CONTROL DEVICE, OPTICAL DEVICE, CONTROL METHOD, AND STORAGE MEDIUM Public/Granted day:2018-11-15
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