\input zb-basic \input zb-ioport \iteman{io-port 05907133} \itemau{Habbi, Hacene; Kidouche, Madjid; Kinnaert, Michel; Zelmat, Mimoun} \itemti{Fuzzy model-based fault detection and diagnosis for a pilot heat exchanger.} \itemso{Int. J. Syst. Sci. 42, No. 4, 587-599 (2011).} \itemab Summary: This article addresses the design and real-time implementation of a Fuzzy model-based fault Detection and Diagnosis (FDD) system for a pilot co-current heat exchanger. The design method is based on a three-step procedure which involves the identification of data-driven fuzzy rule-based models, the design of a fuzzy residual generator and the evaluation of the residuals for fault diagnosis using statistical tests. The fuzzy FDD mechanism has been implemented and validated on the real co-current heat exchanger, and has been proven to be efficient in detecting and isolating process, sensor and actuator faults. \itemrv{~} \itemcc{} \itemut{fuzzy model-based fault detection and diagnosis system; identification of data-driven fuzzy rule-based models; residuals for fault diagnosis using statistical tests; fuzzy FDD mechanism} \itemli{doi:10.1080/00207721003653666} \end