Bridging the gap between theory and practice in LPV fault detection for flight control actuators

•Comparison of LPV FDI methods for aircraft actuator faults using local and global models.•Both methods fulfill the detection requirements and are feasible for implementation.•Industrial Monte-Carlo evaluation of the methods followed by implementation in FCC.•Tuning and adaptive threshold selection related to industrial implementation are highlighted.

Two different approaches for fault detection, the geometric and the detection filter based methods, are compared in the paper from practical aspects, using the linear parameter-varying (LPV) framework. Presenting two designs allows a comparison of global, system level, and local component level fault detection methods with special emphasis on their relevance to aircraft industry. Practical engineering design decisions are highlighted via applying them to a high-fidelity commercial aircraft problem. The successive steps of the design, including fault modeling, LPV model generation, and LPV FDI filter synthesis, including implementation aspects, are discussed. Results are presented according to the industrial assessment perspectives phrased within the EU ADDSAFE project.