Stabilization for Takagi-Sugeno fuzzy systems based on partitioning the range of fuzzy weights

Abstract

In this note, the state-feedback stabilization for continuous-time Takagi-Sugeno (T-S) fuzzy systems is addressed, where the fuzzy weighting functions are assumed to be differentiable and their ranges of variation are possibly bounded by some parameters. By utilizing the matrix elimination lemma and introducing a polyhedral partition to the range of the fuzzy weights, the quadratically parameterized condition is transformed to being piecewise linear in both the fuzzy weights and their derivatives. Then, a switching control based on the partition is considered, by utilizing the extreme points in each partition to address the constraints of the fuzzy weights and their derivatives. The simulation shows that finer subdivision in the partition leads to better stability and stabilization margins. (C) 2012 Elsevier Ltd. All rights reserved.