title   
  

Sliding mode control for high-precision motion of a piezostage

Abidi, Khalid Seyed and Şabanoviç, Asif (2007) Sliding mode control for high-precision motion of a piezostage. IEEE Transactions on Industrial Electronics, 54 (1). 629 -637 . ISSN 0278-0046

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Official URL: http://dx.doi.org/10.1109/TIE.2006.885477

Abstract

In this paper, control of piezostage using sliding mode control (SMC) method is presented. Due to the fast dynamics of piezostage and since high accuracy is required the special attention is paid to avoid chattering. The presence of hysteresis characteristics represents main nonlinearity in the system. Structure of proposed SMC controller is proven to offer chattering-free motion and rejection of the disturbances represented by hysteresis and the time variation of the piezostack parameters. In order to enhance the accuracy of the closed loop system, a combination of disturbance rejection method and the SMC controller is explored and its effectiveness is experimentally demonstrated. The disturbance observer is constructed using a second-order lumped parameter model of the piezostage and is based on SMC framework. Closed-loop experiments are presented using proportional-integral-derivative controller and sliding mode controller with disturbance compensation for the purpose of comparison.

Item Type:Article
Uncontrolled Keywords:discrete-time control; high-precision motion; piezostage; sliding-mode control (SMC)
Subjects:T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
ID Code:69
Deposited By:Asif Şabanoviç
Deposited On:05 Apr 2007 03:00
Last Modified:25 May 2011 14:02

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