Decentralized adaptive control for linear multivariable systems with direct paths from input to output

Decentralized control is more efficient for the system composed of the interconnected subsystems than centralized control, because decentralized control is considered to have fault-tolerance property. But several assumptions are needed to stabilize the decentralized control system, and system may not be robust to changes of parameters. Therefore the adaptive type decentralized controller is proposed. However its assumption is so strict that it is difficult to be actually applied. In this paper, we relax the assumption that the relative degree of each subsystem should be one. And we study on the stabilizability and fault tolerance property of the system in which each subsystem has direct paths from input to output.<>