Sliding mode control design of an electrostatic microactuator using LPV schemes

Alwi, H. and Zolotas, Argyrios and Edwards, C. and Grigoriadis, K. (2012) Sliding mode control design of an electrostatic microactuator using LPV schemes. In: 2012 American Control Conference (ACC), 27-29 June 2012, Montreal, QC, Canada.

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Sliding mode control design of an electrostatic microactuator using LPV schemes

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Abstract

This paper presents preliminary results of a robust linear parameter varying (LPV)-based sliding mode voltage controller for a parallel-plate electro-static microactuator. The controller design aims to extend the travelling range of the microactuator plates beyond the, so-called, `pull-in' condition, thus taking advantage of an increased range of operation. The designed controller is successful in extending the microactuator's plates operation beyond the pull-in condition with moderate controller complexity, while guaranteeing robustness against matched uncertainty. Results illustrate, that the controller also provides a degree of robustness to unmatched uncertainty (i.e. spring stiffness variation). Appropriate simulation studies, on the nonlinear normalized microactuator model, are employed to assess the efficacy of the proposed controller.

Keywords:computational complexity, control system synthesis, electrostatic actuators, microactuators, nonlinear control systems, robust control, variable structure systems, voltage regulators, LPV schemes, controller complexity, parallel-plate electrostatic microactuator, robust linear parameter varying based sliding mode voltage controller, sliding mode control design, unmatched uncertainty, Electrostatics, Observers, Robustness, Sliding mode control, Uncertainty, Voltage control
Subjects:H Engineering > H660 Control Systems
H Engineering > H100 General Engineering
G Mathematical and Computer Sciences > G190 Mathematics not elsewhere classified
Divisions:College of Science > School of Engineering
ID Code:15035
Deposited On:24 Sep 2014 10:19

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