Decentralized fixed mode radius of LTI system with multiple input and output delays

Abstract

Decentralized Fixed Mode (DFM) radius is a robustness measure of decentralized control system reflecting how far a system is from having DFM. In this paper, real DFM radius is defined for decentralized control systems with input and output delays, and a computing formula is derived for the same using restricted real perturbation measures. Results of this paper for computing DFM radius of time-delay system are studied with the help of numerical examples.