文献详情
A Method for Aileron Actuator Fault Diagnosis Based on PCA and PGC-SVM
文献类型期刊
作者Qin, Wei-Li[1];Zhang, Wen-Jin[2];Lu, Chen[3]
机构
通讯作者Lu, C (reprint author), Sci & Technol Reliabil & Environm Engn Lab, Beijing 100191, Peoples R China.
来源信息年:2016  卷:2016  
期刊信息SHOCK AND VIBRATION影响因子和分区  ISSN:1070-9622
增刊正刊
摘要Aileron actuators are pivotal components for aircraft flight control system. Thus, the fault diagnosis of aileron actuators is vital in the enhancement of the reliability and fault tolerant capability. This paper presents an aileron actuator fault diagnosis approach combining principal component analysis (PCA), grid search (GS), 10-fold cross validation (CV), and one-versus-one support vector machine (SVM). This method is referred to as PGC-SVM and utilizes the direct drive valve input, force motor current, and displacement feedback signal to realize fault detection and location. First, several common faults of aileron actuators, which include force motor coil break, sensor coil break, cylinder leakage, and amplifier gain reduction, are extracted from the fault quadrantal diagram; the corresponding fault mechanisms are analyzed. Second, the data feature extraction is performed with dimension reduction using PCA. Finally, the GS and CV algorithms are employed to train a one-versus-one SVM for fault classification, thus obtaining the optimal model parameters and assuring the generalization of the trained SVM, respectively. To verify the effectiveness of the proposed approach, four types of faults are introduced into the simulation model established by AMESim and Simulink. The results demonstrate its desirable diagnostic performance which outperforms that of the traditional SVM by comparison.
收录情况SCIE(WOS:000372236700001)  EI(20160801988579)  
所属部门可靠性与系统工程学院
DOI10.1155/2016/4807250
学科声学;工程:机械;力学
百度学术A Method for Aileron Actuator Fault Diagnosis Based on PCA and PGC-SVM
语言外文
人气指数43
浏览次数43
基金National Natural Science Foundation of China [61074083, 50705005, 51105019]; Technology Foundation Program of National Defense [Z132013B002]
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