Distributed Fault Estimation and Fault-Tolerant Control of Interconnected Systems

This paper studies distributed fault estimation and fault-tolerant control for continuous-time interconnected systems. Using associated information among subsystems to design the distributed fault estimation observer can improve the accuracy of fault estimation of interconnected systems. Based on static output feedback, the global outputs of interconnected systems are used to construct a distributed fault-tolerant control. The multi-constrained methods are proposed to enhance the transient performance and ability to suppress external disturbances simultaneously. The conditions of the presented design techniques are expressed in terms of linear matrix inequalities. Simulation results are illustrated to show the feasibility of the presented approaches.