Hammerstein system identification in the presence of threshold-discrete Prandtl-Ishlinskii operator and its application in piezoelectric actuator

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Abstract

A two-stage decoupling identification method is developed for Hammerstein system containing the threshold-discrete Prandtl-Ishlinskii (TDPI) operator with non-local memories. In the first stage, a persistently exciting input is designed so that the linear subsystem can be made decoupled from the nonlinear element and linear subsystem identification is coped with using a least squares estimator. Then, the nonlinear subsystem is estimated through designing an appropriate exciting signal, which guarantees the estimator consistency. The effectiveness of the algorithm is verified by piezoelectric actuator (PEA) experiments.

Original languageEnglish
Title of host publicationProceedings of the 36th Chinese Control Conference, CCC 2017
EditorsTao Liu, Qianchuan Zhao
PublisherIEEE Computer Society
Pages2204-2209
Number of pages6
ISBN (Electronic)9789881563934
DOIs
StatePublished - 7 Sep 2017
Event36th Chinese Control Conference, CCC 2017 - Dalian, China
Duration: 26 Jul 201728 Jul 2017

Publication series

NameChinese Control Conference, CCC
ISSN (Print)1934-1768
ISSN (Electronic)2161-2927

Conference

Conference36th Chinese Control Conference, CCC 2017
Country/TerritoryChina
CityDalian
Period26/07/1728/07/17

Keywords

  • Hammerstein system
  • hysteresis
  • identification
  • piezoelectric actuator
  • TDPI operator

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