Decentralized Robust Fault-Tolerant Control and Adaptive Fault Estimator Design for Uncertain Interconnected Systems

Interconnected systems consist of a huge number of coupled subsystems. This coupling results in the existence of uncertain interactions between them and leads to a major problem of fault estimation (FE) and fault-tolerant control (FTC) designs in the presence of undesired faults. This article introduces a design strategy for the FE and FTC for interconnected systems with uncertain interactions and actuator faults. To ensure the robust stability of the overall interconnected system, a decentralized FTC controller is built using state/fault estimations provided by an adaptive observer at the same time. The gains of the observer and the controller are solved by the formulation of linear matrix inequality.

Decentralized Robust Fault-Tolerant Control and Adaptive Fault Estimator Design for Uncertain Interconnected Systems Keywords:

Interconnected systems , adaptive observer , robust control , linear matrix inequality