Invention Grant
- Patent Title: Control apparatus of vibration-type actuator
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Application No.: US15046313Application Date: 2016-02-17
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Publication No.: US09800180B2Publication Date: 2017-10-24
- Inventor: Jun Sumioka
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Canon USA, Inc., IP Division
- Priority: JP2010-264218 20101126
- Main IPC: H02N2/14
- IPC: H02N2/14 ; H02N2/00 ; H02N2/10
Abstract:
Information regarding a rotational speed is detected by utilizing a variation in the amplitude at a frequency corresponding to the number of a plurality of protrusions of a vibrating member generated in an S-phase signal detected from a vibration detection electrode of a vibration-type actuator.
Public/Granted literature
- US20160173005A1 CONTROL APPARATUS OF VIBRATION-TYPE ACTUATOR Public/Granted day:2016-06-16
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