H-2 control of continuous-time uncertain linear systems with input quantization and matched disturbances

Abstract

For uncertain linear systems with input quantization and matched disturbances, this paper introduces an H-2 state-feedback controller, which comprises linear and nonlinear parts. The former part plays a role in determining the fundamental characteristics of the system against model uncertainties. The latter part eliminates the effect of input quantization and matched disturbances. In other words, each component of the latter part is designed as an integer multiple of the quantization level, which provides a clue to maintaining the decreasing property of a Lyapunov function, associated with the H 2 cost, despite input quantization and matched disturbances. (C) 2009 Elsevier Ltd. All rights reserved.