Intelligent anti-windup for systems with input magnitude saturation

Abstract

The paper deals with the global stabilization of linear systems with saturating actuators. A saturated state feedback control law containing an integrating action and a specific anti-windup compensator with nonlinearities of the dead-zone type are simultaneously synthesized to guarantee the global asymptotic stability of the closed-loop system. The approach is direct in the sense that both the proposed control laws are computed simply from a Lyapunov equation based on the controlled system. The controls are allowed to saturate and the steady-state error due to admissible constant perturbations can be brought to zero. © 1998 John Wiley & Sons, Ltd.