Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16005
Title: A nonlinear finite element model of a piezoelectric tube actuator with hysteresis and creep
Authors: Chung, SH
Fung, EHK
Issue Date: 2010
Publisher: Institute of Physics Publishing
Source: Smart materials and structures, 2010, v. 19, no. 4, 45028 How to cite?
Journal: Smart materials and structures 
Abstract: Piezoelectric tube actuators are commonly used for nanopositioning in atomic force microscopes (AFMs). However, piezoelectric tube actuators exhibit hysteresis and creep which significantly limit the accuracy of nanopositioning. A finite element model of a piezoelectric tube actuator with hysteresis and creep is important for control purposes, but so far one has not been developed. The purpose of this paper is to present a nonlinear finite element (FE) model with hysteresis and creep for design purposes. Prandtl-Ishlinskii (PI) hysteresis operators and creep operators are adopted into constitutive equations. The nonlinear FE model is formulated using energy approach and Hamilton's principle. The parameters of the PI hysteresis operators and the creep operators are identified by comparing the simulation results and experimental results of other researchers. The working operation of the piezoelectric tube actuator is simulated by the reduced order FE model, and the displacement error due to hysteresis, creep and coupling effect is investigated. An output feedback controller is implemented into the reduced order FE model to show that this model is controllable.
URI: http://hdl.handle.net/10397/16005
ISSN: 0964-1726
EISSN: 1361-665X
DOI: 10.1088/0964-1726/19/4/045028
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