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Robust H Control for a Class of 2-D Nonlinear Discrete Stochastic Systems

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Abstract

This paper is concerned with the problem of stability and robust H control for 2-D stochastic systems with parameter uncertainties and sector nonlinearities. The class of systems under investigation is described by the 2-D state-space Roesser model. Our attention is focused on the design of a state feedback controller for 2-D stochastic system with sector nonlinearity, such that the closed-loop 2-D stochastic system is asymptotically stable and has a prescribed H disturbance attenuation performance. First, a sufficient condition is established for the 2-D nonlinear stochastic systems to be asymptotically stable. Then, we extend the bounded real lemma for 2-D systems to 2-D stochastic systems with sector nonlinearities. Based on this lemma, solvability conditions for the H control of 2-D nonlinear stochastic systems in the form of LMIs (linear matrix inequalities) are derived. A numerical example illustrates the effectiveness of the proposed results.

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Acknowledgements

The authors would like to thank the Associate Editor and anonymous reviewers for their constructive comments and suggestions which led to the considerable improvement of the presentation of this paper.

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Correspondence to Jiangtao Dai.

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Dai, J., Guo, Z. & Wang, S. Robust H Control for a Class of 2-D Nonlinear Discrete Stochastic Systems. Circuits Syst Signal Process 32, 2297–2316 (2013). https://doi.org/10.1007/s00034-013-9573-8

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