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On the design of output feedback sliding mode control for a class of uncertain system

Gatavi, E. and Husain, Abdul Rashid and Shirdel, A. H. and Ahmad, M. N. (2011) On the design of output feedback sliding mode control for a class of uncertain system. In: 4th International Conference on Modeling, Simulation and Applied Optimization. IEEE XPLORE, , 001-004. ISBN 978-1-4577-0003-3

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Official URL: http://dx.doi.org/10.1109/ICMSAO.2011.5775481

Abstract

In this study, output feedback sliding mode control (OFSMC) is proposed for a class of system with the uncertainties present in its output matrix. The uncertain output exist in practical system is mainly due to measurement error contributed by sensor noise or low measurement resolution. Sliding Mode Control (SMC) approach is able to provide a promisable solution due to its robustness toward system uncertainties and disturbances, However, OFSMC has imposed a greater challenge due to inaccessibility to all of the system states. In this work, an OFSMC is designed in which the actual system output will follow the desired trajectory in spite of the presence of uncertainties. The control law is designed based on Lyapunov function which the proposed controller guarantees the asymptotic convergence of the output. The sliding surface is formulated such that stability of the reduced-order system is maintained and the convex formulation of the problem is solved by using Linear Matrix Inequality (LMI). Simulation result based on a numerical example is obtained to demonstrate the efficacy of proposed method.

Item Type:Book Section
Uncontrolled Keywords:linear matrix inequality, output feedback, output matrix, sliding mode, uncertain output
Subjects:T Technology
Divisions:Others
ID Code:29663
Deposited By: Maznah Mohamed Ali
Deposited On:21 Mar 2013 08:05
Last Modified:04 Feb 2017 07:31

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