Invention Grant
- Patent Title: Piezoelectric motor, drive circuit, and drive method
- Patent Title (中): 压电电机,驱动电路和驱动方式
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Application No.: US13800913Application Date: 2013-03-13
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Publication No.: US09118264B2Publication Date: 2015-08-25
- Inventor: Tsutomu Miyamoto
- Applicant: SEIKO EPSON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Workman Nydegger
- Priority: JP2012-094975 20120418
- Main IPC: H02N2/14
- IPC: H02N2/14 ; H02N2/00 ; H02N2/10

Abstract:
A piezoelectric motor includes a rotating body, a piezoelectric actuator including a protruding section having contact with the rotating body, and adapted to rotate the rotating body due to a motion of the protruding section when driving a piezoelectric element, and a drive circuit adapted to drive the piezoelectric element, and the drive circuit includes a drive signal generation section adapted to output a drive signal with a predetermined frequency, and an LC filter adapted to block a frequency higher than the predetermined frequency, and applies the drive signal to the piezoelectric element via the LC filter.
Public/Granted literature
- US20130278110A1 PIEZOELECTRIC MOTOR, DRIVE CIRCUIT, AND DRIVE METHOD Public/Granted day:2013-10-24
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