Nonfragile H∞ Filter Design for Nonlinear Continuous-Time System with Interval Time-Varying Delay

Abstract EN

This paper investigates nonfragile H∞ filter design for a class of continuous-time delayed Takagi-Sugeno (T-S) fuzzy systems with interval time-varying delays.

Filter parameters occur multiplicative gain variations according to the filter’s implementation, to handle this variations, a nonfragile H∞ filter is presented and a novel filtering error system is established.

The nonfragile H∞ filter guarantees the filtering error system to be asymptotically stable and satisfies given H∞ performance index.

By constructing a novel Lyapunov-Krasovskii function and using the linear matrix inequality (LMI), delay-dependent conditions are exploited to derive sufficient conditions for nonfragile designing H∞ filter.

Using new matrix decoupling method to reduce the computational complexity, the filter parameters can be obtained by solving a set of linear matrix inequalities (LMIs).

Finally, numerical examples are given to show the effectiveness of the proposed method.