EMMAE failure detection system and failure evaluation over flight performance

Emerald - 2012
YuehengQiu1, WeiguoZhang1, XiaoxiongLiu1, PengxuanZhao2
1School of Automation, Northwestern Polytechnical University, Xi’an, People’s Republic of China
2First Aircraft Design Institute of AVIC, Xi'an, People's Republic of China

Tóm tắt

PurposeThe purpose of this paper is to present the research into fault detection and isolation (FDI) and evaluation of the reduction of performance after failures occurred in the flight control system (FCS) during its mission operation.Design/methodology/approachThe FDI is accomplished via using the multiple models scheme which is developed based on the Extend Kalman Filter (EKF) algorithm. Towards this objective, the healthy mode of the FCS under different type of failures, including the control surfaces and structural, should be considered. It developed a bank of extended multiple models adaptive estimation (EMMAE) to detect and isolate the above mentioned failures in the FCS. In addition, the performances including the flight envelope, the voyage and endurance in cruising are proposed to reference and evaluate the process of mission, especially for UAV under failure conditions.FindingsThe contribution of this paper is to provide the information not only about the failures, but also considering whether the UAV can accomplish the task for the ground station.Originality/valueThe main contribution of this paper is in the areas of the structural and control surface faults researching, which are occurred in the mission procedures and emphasized the identification of those failures' magnitudes. The FDI scheme includes the performance evaluation, while the evaluation obtained through the extensive numerical simulations and saved in the offline database. As a consequence, it is more accurate and less computationally demanding while evaluating the performance.

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