Title:
ITERATIVE LEARNING-BASED ENERGY-SAVING CONTROL METHOD FOR PIEZOELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2021/159786
Kind Code:
A1
Abstract:
An iterative learning-based energy-saving control method for a piezoelectric motor, comprising: setting a sampling period of a piezoelectric motor (101); obtaining an expected output trajectory of the piezoelectric motor, and performing sampling according to the sampling period to obtain a sampled expected output sequence (102); setting an initial control input signal of the piezoelectric motor (103); obtaining an actual control input signal according to a mapping relation of the initial control input signal, and transmitting the actual control input signal to the piezoelectric motor to obtain an actual output position (104); obtaining a mapping relation of the output position of the piezoelectric motor according to the actual output position, and sampling the mapping relation according to the sampling period to obtain a sampled actual output sequence (105); calculating the difference between the sampled expected output sequence and the sampled actual output sequence to obtain a sampling error function sequence (106); obtaining an iterative learning gain parameter by calculation according to a preset convergence condition (107); and obtaining, by calculation according to the sampling error function sequence and the iterative learning gain parameter, an iterative input voltage required by iteration of the piezoelectric motor, and transmitting the iterative input voltage to the piezoelectric motor (108).
Inventors:
WEI YUNSHAN (CN)
CHEN YINGYU (CN)
ZHAO ZHIJIA (CN)
XU QINGYUAN (CN)
WAN KAI (CN)
CHEN YINGYU (CN)
ZHAO ZHIJIA (CN)
XU QINGYUAN (CN)
WAN KAI (CN)
Application Number:
PCT/CN2020/127712
Publication Date:
August 19, 2021
Filing Date:
November 10, 2020
Export Citation:
Assignee:
UNIV GUANGZHOU (CN)
International Classes:
H02N2/00
Foreign References:
| CN111200378A | 2020-05-26 | |||
| CN106325072A | 2017-01-11 | |||
| CN109787531A | 2019-05-21 | |||
| CN110488759A | 2019-11-22 | |||
| EP1278109A1 | 2003-01-22 | |||
| US20130116814A1 | 2013-05-09 |
Attorney, Agent or Firm:
GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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