Issues on integration of fault diagnosis and reconfigurable control in active fault-tolerant control systems

Abstract

In this chapter, several important issues on the integrated design of Fault Detection and Diagnosis (FDD) schemes together with Reconfigurable Control (RC) for Active Fault-Tolerant Control Systems (AFTCS) are addressed and discussed. AFTCS react to the occurrence of system faults online in real-time in an attempt to maintain the overall system stability and performance. Two main potential advantages of AFTCS are the ability to deal with previously unknown faults with explicit FDD and Controller Reconfiguration (CR); and 2) the possibility to achieve the optimal performance.The existing approaches in FDD and RC are briefly reviewed and examined from integrated design of FDD and RC viewpoint. The role of FDD in AFTCS, the applicability, suitability and issues in existing FDD approaches for AFTCS are examined and outlined. The need, development, and design considerations for integrated design to fault detection, diagnosis and reconfigurable control are discussed.