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A Survey of Fault Detection, Isolation, and Reconfiguration Methods

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4 Author(s)
Inseok Hwang ; Sch. of Aeronaut. & Astronaut., Purdue Univ., West Lafayette, IN, USA ; Sungwan Kim ; Youdan Kim ; Chze Eng Seah

Fault detection, isolation, and reconfiguration (FDIR) is an important and challenging problem in many engineering applications and continues to be an active area of research in the control community. This paper presents a survey of the various model-based FDIR methods developed in the last decade. In the paper, the FDIR problem is divided into the fault detection and isolation (FDI) step, and the controller reconfiguration step. For FDI, we discuss various model-based techniques to generate residuals that are robust to noise, unknown disturbance, and model uncertainties, as well as various statistical techniques of testing the residuals for abrupt changes (or faults). We then discuss various techniques of implementing reconfigurable control strategy in response to faults.

Published in:

IEEE Transactions on Control Systems Technology  (Volume:18 ,  Issue: 3 )