Technical Notes and Correspondence

International Journal of Control, Automation and Systems 2011; 9(3): 588-594

Published online June 4, 2011

https://doi.org/10.1007/s12555-011-0320-2

© The International Journal of Control, Automation, and Systems

On-line Identification Algorithm and Convergence Analysis for Sandwich Systems with Backlash

Ruili Dong and Yonghong Tan*

Shanghai Normal University, China

Abstract

In this paper, an on-line algorithm for identification of sandwich systems with backlash is proposed. In this method, the sandwich systems with backlash can be transformed into a special model where all the model parameters are separated based on the so-called key term separation principle. In this case, a piecewise model with linear coefficients combining with nonlinear variables is obtained. Thus, an ex-tended recursive identification algorithm is used to estimate the parameters of the proposed model. Fi-nally, the modeling results on an X-Y positioning stage are presented.

Keywords Backlash, identification, nonlinear systems, recursive estimation, sandwich system.

Article

Technical Notes and Correspondence

International Journal of Control, Automation and Systems 2011; 9(3): 588-594

Published online June 1, 2011 https://doi.org/10.1007/s12555-011-0320-2

Copyright © The International Journal of Control, Automation, and Systems.

On-line Identification Algorithm and Convergence Analysis for Sandwich Systems with Backlash

Ruili Dong and Yonghong Tan*

Shanghai Normal University, China

Abstract

In this paper, an on-line algorithm for identification of sandwich systems with backlash is proposed. In this method, the sandwich systems with backlash can be transformed into a special model where all the model parameters are separated based on the so-called key term separation principle. In this case, a piecewise model with linear coefficients combining with nonlinear variables is obtained. Thus, an ex-tended recursive identification algorithm is used to estimate the parameters of the proposed model. Fi-nally, the modeling results on an X-Y positioning stage are presented.

Keywords: Backlash, identification, nonlinear systems, recursive estimation, sandwich system.

IJCAS
July 2024

Vol. 22, No. 7, pp. 2055~2340

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