An improvement to the low gain design for discrete-time linear systems in the presence of actuator saturation nonlinearity

Abstract

A low-gain design for linear discrete-time systems subject to input saturation was recently developed to solve both semi-global stabilization and semi-global output regulation problems. This paper proposes an improvement to the low-gain design and determines controllers with the new design that achieve semi-global output regulation. The improvement is reflected in better utilization of available control capacity and consequently better closed-loop performance. Copyright © 2000 John Wiley & Sons, Ltd.