Invention Grant
- Patent Title: Driving unit of vibration-type actuator
- Patent Title (中): 振动型执行器的驱动单元
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Application No.: US13050774Application Date: 2011-03-17
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Publication No.: US09048760B2Publication Date: 2015-06-02
- Inventor: Kenichi Kataoka , Jun Sumioka
- Applicant: Kenichi Kataoka , Jun Sumioka
- 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: JP2010-064317 20100319
- Main IPC: H02N2/06
- IPC: H02N2/06 ; H02N2/14 ; H02N2/00 ; H02N2/02 ; H02N2/16

Abstract:
A driving unit of a vibration-type actuator includes a command unit, a change making unit, an AC signal generating unit, and a filter unit. The command unit outputs a command signal that directs at least one of a frequency, an amplitude, and a phase difference of an AC signal. The change making unit makes a change to the command signal and outputs the command signal. The AC signal generating unit generates a generated AC signal in which at least one of a frequency, an amplitude, and a phase difference of the generated AC signal is modulated in accordance with the output of the change making unit. The filter unit selectively dampens a frequency component, of at least one of the output signal of the change making unit and an output signal of the AC signal generating unit, that excites vibration other than vibration in a predetermined vibration mode.
Public/Granted literature
- US20110227511A1 DRIVING UNIT OF VIBRATION-TYPE ACTUATOR Public/Granted day:2011-09-22
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