New Criterion of Robust Hܣ Stabilization for Uncertain Neutral Systems
Jiyong Lu *
College of Science, Tianjin University of Science and Technology, Tianjin 300457, China.
*Author to whom correspondence should be addressed.
Abstract
The problems of delay-dependent robust stability and stabilization for a class of uncertain neutral systems are investigated in this paper. At first, by constructing a new Lyapunov functional and using the Lyapunov stability theory, a new delay-dependent condition which renders the system with no external disturbance and input to be asymptotically stable is obtained and given by a linear matrix inequality. Then, based on the obtained condition, a state feedback stabilize law is designed, which guarantees closed-loop neutral systems are asymptotically stable for all the permitted uncertainties when the external disturbance is naught, and it can also guarantee the closed-loop systems have performance under the external disturbance. The model of neutral systems with both the uncertainty and the disturbance discussed in this paper has rarely been considered before.
Keywords: Neutral system, delay-dependent, robust stability, Hܣ state feedback, linear matrix inequality