학술논문
Adaptive feed-forward controller of piezoelectric actuator for micro/nano-positioning.
Document Type
Article
Author
Source
Subject
*FEEDFORWARD control systems
*ADAPTIVE control systems
*PIEZOELECTRIC actuators
*NANOPOSITIONING systems
*DISCRETE-time systems
*HYSTERESIS
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Language
ISSN
0256-2499
Abstract
In this paper, design and implementation of an adaptive feed-forward controller for micro/nano-positioning control of piezoelectric actuator (PEA) is described. Discrete-time Dahl hysteresis-based mathematical model of the PEA is developed and the values of the model parameters are estimated through an autoregressive with exogenous terms (ARX) model identification technique using experimental input-output data. A recursive least-square estimator (RLSE)-based adaptive feed-forward (FF) controller is proposed, which takes into account the parameter uncertainty. The FF controller has also been implemented in a DsPIC30F4011 microcontroller. The established PEA model and the controller are validated by simulation and experimental results including parameter variation. [ABSTRACT FROM AUTHOR]