Modeling of Hysteresis in Piezoelectric Actuator Using Linear Play Operator Adaptive Filter

Piezoelectric actuator (PEA) is widely applied in micro/nanopositioning system. However, its inherent hysteresis limits its application. Modeling of hysteresis plays an important role in solving this problem. Linear play operators (LPO) adaptive hysteresis model is introduced in this paper. LPO oper...

Full description

Saved in:
Bibliographic Details
Published in:Key engineering materials 2015-05, Vol.645-646, p.957-962
Main Authors: Xiong, Rui, Liu, Xiang Dong, Shan, Feng Min
Format: Article
Language:English
Subjects:
Adaptive algorithms
Adaptive filters
Asymmetry
Delay
Hysteresis
Operators
Piezoelectric actuators
Serials
Transversal filters
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Piezoelectric actuator (PEA) is widely applied in micro/nanopositioning system. However, its inherent hysteresis limits its application. Modeling of hysteresis plays an important role in solving this problem. Linear play operators (LPO) adaptive hysteresis model is introduced in this paper. LPO operators are used to replace delay operators of adaptive transversal filter to compose a new serial structure of adaptive transversal filter model, and LMS (Least Mean Square) algorithm is used to adjust the weight values. As hysteresis loop of piezoelectric actuator is asymmetric and LPO operator is symmetric, a modified LPO (MLPO) adaptive filter is proposed for asymmetric hysteresis effect. At last, the two LPO filters are applied to model hysteresis characteristic of Piezoelectric actuator, and the modeling effect is verified via a micro-positioning system experiment platform based on Piezoelectric actuator. Experimental results show that the modified LPO filters can achieve better accurate hysteresis modeling.
ISSN:1013-9826
1662-9795
DOI:10.4028/www.scientific.net/KEM.645646.957