Application of the Dual High-Gain Scaling Technique to Decentralized Control and Disturbance Attenuation

In this paper, we propose a dynamic high-gain scaling-based output-feedback controller for decentralized control and disturbance attenuation of interconnected large-scale systems. Each subsystem in the large-scale system has a nominal part in a general strict-feedback-like structure and appended input-to-state practically stable (ISpS) dynamics which are allowed to be driven by all the subsystem states and the subsystem input. The subsystems are interconnected through uncertain functions that appear in each of the subsystem dynamics. The bounds introduced on the uncertain functions are allowed to involve the outputs of all subsystems and also a component of the appended ISpS dynamics of all subsystems