The invention discloses an aircraft actuator fault diagnosis method based on an AdaBoost-ASVM algorithm. With common jamming, loose floating, damage and reverse faults of an aircraft actuator as research objects, collected various fault signals and signals in a normal state are subjected to integrated empirical mode decomposition to obtain a series of stable intrinsic mode functions (IMF) and residual errors; a large number of time domain characteristic parameters are calculated for each intrinsic mode function and residual error; principal component analysis is carried out on the characteristic parameters by utilizing a principal component analysis method, and characteristics with relatively high contribution rates are extracted to construct a training set and a test set; and finally, an AdaBoost-ASVM classifier is established on the training set, and whether the actuator has a fault or not and the type of the fault are determined. The method is high in calculation speed and high inrecognition precision, and can be effectively applied to fault diagnosis of the aircraft actuator.
本发明公开了一种基于AdaBoost‑ASVM算法的飞机执行器故障诊断方法,以飞机执行器常见的卡死、松浮、损伤、反向故障为研究对象,首先将采集到的各种故障信号和正常状态下的信号进行集成经验模态分解,得到一系列平稳的固有模态函数(IMF)和残差;然后对每个固有模态函数和残差计算大量时域特征参数;利用主成分分析法对特征参数进行主元分析,提取贡献率较高的特征构建为训练集和测试集;最后在训练集上建立AdaBoost‑ASVM分类器,对执行器是否发生故障以及故障类型进行识别。本方法可计算速度快,识别精度高,以有效地运用到飞机执行器故障诊断中。
Aircraft actuator fault diagnosis method based on AdaBoost-ASVM algorithm
一种基于AdaBoost-ASVM算法的飞机执行器故障诊断方法
2020-04-14
Patent
Electronic Resource
Chinese
IPC: | G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G06K Erkennen von Daten , RECOGNITION OF DATA |
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