Design of Fault-Tolerant Controllers for Guaranteed H2-Performance over Digital Networks with Time-Varying Communication Delays

Abstract This paper addresses the problem of fault tolerant control over communication networks which induce time-varying delays in bounded intervals. The problem is formulated in a discrete-time setting by modeling the controlled plant which may be subject to failures as an uncertain discrete-time process connected to a discrete-time controller via a digital communication network. A procedure is presented for the design of a bank of fault-tolerant controllers capable to stabilize and guarantee an H 2 -performance bound for all faulty plant modes in the presence of network-induced time-varying delays.