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Abstract and Applied Analysis
Volume 2012 (2012), Article ID 796104, 19 pages
doi:10.1155/2012/796104
th Moment Exponential Stability of Stochastic PWM Feedback Systems with Time-Varying Delays
College of Mathematics and Statistics, Chongqing University, Chongqing 400044, China
Received 22 September 2012; Accepted 12 November 2012
Academic Editor: Chuandong Li
Copyright © 2012 Zhong Zhang and Lixia Ye. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This paper further studies the th moment exponential stability of stochastic pulse-width-modulated (PWM) feedback systems with distributed time-varying delays. We establish several globally exponential stability criteria for such PWM feedback systems by using Lyapunov-Krasovskii functional and then present an upper bound of the parameter of PWM when the system is stable and such system has stronger anti-interference performance than the system without time-varying delays. Furthermore, we present two examples to show the effectiveness and conservativeness of the theoretical results.