Decentralized adaptive output feedback control for a class of time delay large-scale systems

The problem of decentralized output feedback adaptive stabilization for a class of large-scale systems subject to uncertain parameters and multiple time-varying delays in the interconnections. The interconnections are assumed to satisfy the matching conditions and the nominal system of each subsystems is strictly feedback positive real. By estimating the unknown bounds of the uncertain parameter matrices we propose a decentralized output feedback adaptive controller, which can guarantee the closed-loop system to converge, globally, uniformly and exponentially, to a bounded ball. Finally; an illustrative example is given to demonstrate the validity of the results.