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Modeling Nonlinear Behavior in a Piezoelectric Actuator by H. Richter; E.A. Misawa; D.A. Lucca; H. Lu is a Engineering article available to read on EtoBox.

What is Modeling Nonlinear Behavior in a Piezoelectric Actuator about?

A piezoelectric tube actuator is employed as a sample positioning device in Nanocut, a cutting instrument conceived to study the mechanics of nanometric cutting. Extension of functionality of the instrument as a nanometric machine tool motivates the search for an accurate model of the actuator for implementing feedback control. A simple nonlinear model describing longitudinal expansion of the piezoelectric tube actuator is presented in this paper. The model derivation is based on a non-formal analogy with nonlinear viscoelastic materials under uniaxial extension, for which the responses to a step input are similar to the piezoelectric tube. Suitability of the model structure for arbitrary inputs is tested by cross-verification between time and frequency domains. Two parameter estimation procedures are examined and the results of the experimental work for characterization, estimation and validation are presented.

Who reads Modeling Nonlinear Behavior in a Piezoelectric Actuator?

Author

H. Richter; E.A. Misawa; D.A. Lucca; H. Lu

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0141-6359)

Published

2001

Language

EN

Field

Engineering (Physical Sciences)