This paper concerns the fault detection problem of electro-mechanical flight actuators (EMFAs) subject to nonlinear terms, unknown disturbances and proposes an extended state observer-based threshold fault detection method. The nonlinear model of EMFAs is firstly formulated, wherein the lumped disturbances including aerodynamic load torque and friction torque are considered. Employing extended state observer (ESO) technique, the synthesized disturbances can be estimated efficiently. Based on the estimation errors, a fault threshold is constructed to detect whether faults occur in EMFAs. Finally, the simulation results and analysis with various lumped disturbances verify that the developed method has high plasticity and can effectively detect the system faults.
Extended State Observer-Based Threshold Fault Detection Design of Electro-Mechanical Flight Actuators with Unknown Disturbances
Lect. Notes Electrical Eng.
2021-10-30
12 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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