Abstract
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.
This work was supported by Zhenjiang Science and Technology Program under Grant GY2018029 and by Jiangsu Aviation Technical College in 2019 under Grant JATC19010109.
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Yang, Z., Mao, Q., Sun, X. (2022). Extended State Observer-Based Threshold Fault Detection Design of Electro-Mechanical Flight Actuators with Unknown Disturbances. In: Yan, L., Duan, H., Yu, X. (eds) Advances in Guidance, Navigation and Control . Lecture Notes in Electrical Engineering, vol 644. Springer, Singapore. https://doi.org/10.1007/978-981-15-8155-7_142
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DOI: https://doi.org/10.1007/978-981-15-8155-7_142
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