Title:
DRIVE CONTROL CIRCUIT AND METHOD, DRIVE MODULE, CAMERA MODULE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/065857
Kind Code:
A1
Abstract:
A drive control circuit (100), comprising: a signal generating module (110), adapted to be connected to a piezoelectric motor (200), and configured to generate a drive signal to drive the piezoelectric motor (200) to work; a frequency tracking module (120), connected to the signal generating module (110), further adapted to be connected to the piezoelectric motor (200), and configured to detect a working electrical signal of the piezoelectric motor (200), and output an adjustment signal to the signal generating module (110) according to the working electrical signal, so that the signal generating module (110) generates the drive signal according to the received adjustment signal. If the frequency tracking module (120) outputs an adjustment signal corresponding to a maximum working electrical signal, the signal generating module (110) generates a target drive signal having target frequency, so as to drive the piezoelectric motor (200) to work at mechanical resonant frequency.
Inventors:
LI FEI (CN)
JIN HAONAN (CN)
HE YUHANG (CN)
GAO XIANGYU (CN)
XIA SONG (CN)
XIN BENJIAN (CN)
REN KAILE (CN)
XU ZHUO (CN)
CHEN WEI (CN)
JIN HAONAN (CN)
HE YUHANG (CN)
GAO XIANGYU (CN)
XIA SONG (CN)
XIN BENJIAN (CN)
REN KAILE (CN)
XU ZHUO (CN)
CHEN WEI (CN)
Application Number:
PCT/CN2022/116939
Publication Date:
April 27, 2023
Filing Date:
September 05, 2022
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H02P25/032; H02P25/04; H02P25/06
Foreign References:
| CN111211726A | 2020-05-29 | |||
| CN207442726U | 2018-06-01 | |||
| CN204595517U | 2015-08-26 | |||
| CN106849781A | 2017-06-13 | |||
| CN102891648A | 2013-01-23 | |||
| JP2021158804A | 2021-10-07 | |||
| JPH08126357A | 1996-05-17 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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