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Output feedback control of nonlinear systems under unreliable communication links via T-S fuzzy models

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3 Author(s)
Jianbin Qiu ; Space Control & Inertial Technol. Res. Center, Harbin Inst. of Technol., Harbin, China ; Gang Feng ; Huijun Gao

This paper investigates the problem of robust ℋ output feedback control for a class of nonlinear systems under unreliable communication links. The nonlinear plant is represented by a Takagi-Sugeno (T-S) uncertain fuzzy model. The communication links between the plant and controller are assumed to be imperfect, that is, data packet dropouts occur intermittently, which is often the case in a network environment. Stochastic variables satisfying the Bernoulli random binary distribution are adopted to characterize the data missing phenomenon. Attention is focused on the design of a piecewise static output feedback controller such that the closed-loop system is stochastically stable with a guaranteed ℋ performance. Based on a piecewise Lyapunnov function combined with some novel convexifying techniques, the developed theoretical results are in the form of linear matrix inequalities. Finally, a simulation example is also provided to illustrate the effectiveness and less conservatism of the proposed approaches.

Published in:

Control and Automation (ICCA), 2010 8th IEEE International Conference on

Date of Conference:

9-11 June 2010