Reliable regulation by high-gain feedback

This paper addresses the design of regulators which supply the control system with signal tracking and disturbance rejection. This property has to be attained, to the maximum possible extent, even under actuators and sensors faults. The problem is tackled for LTI, even unstable, plants, subject to perturbations, and unbounded and/or oscillatory exogenous signals. Both the cases of centralized and decentralized regulators are considered. The proposed regulator is composed of an LTI nominal controller supervised by a reconfiguration block. First, the actions of the reconfiguration block are described. Then, the nominal controller is synthesized by finding high-gain solutions to a suitable regulation problem.