Subspace Aided Fault-tolerant Control for Distributed Homogeneous Systems with Symmetric Interconnection Pattern

摘要

Stimulated by the enhancing requirements for system safety as well as process reliability in industrial processes, this paper investigates a subspace aided fault-tolerant control scheme for distributed homogeneous systems with symmetric interconnection pattern. To this end, a decomposition approach is first addressed to show how to convert and decompose the original distributed homogeneous system into a set of independent subsystems. Then, for the independent subsystems, offline subspace predictive controllers and recursive fault-tolerant subspace predictive controllers are designed respectively in a decentralized way. Finally, the controllers designed for the independent subsystems are converted back to the original distributed homogeneous system to achieve its fault-tolerant control goal. The effectiveness of the proposed scheme is demonstrated by a case study on a multi-area interconnected power system.