A Method for Aileron Actuator Fault Diagnosis Based on PCA and PGC-SVM
Joint Authors
Qin, Wei-Li
Zhang, Wen-Jin
Lu, Chen
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-01-20
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
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.
American Psychological Association (APA)
Qin, Wei-Li& Zhang, Wen-Jin& Lu, Chen. 2016. A Method for Aileron Actuator Fault Diagnosis Based on PCA and PGC-SVM. Shock and Vibration،Vol. 2016, no. 2016, pp.1-12.
https://search.emarefa.net/detail/BIM-1119207
Modern Language Association (MLA)
Qin, Wei-Li…[et al.]. A Method for Aileron Actuator Fault Diagnosis Based on PCA and PGC-SVM. Shock and Vibration No. 2016 (2016), pp.1-12.
https://search.emarefa.net/detail/BIM-1119207
American Medical Association (AMA)
Qin, Wei-Li& Zhang, Wen-Jin& Lu, Chen. A Method for Aileron Actuator Fault Diagnosis Based on PCA and PGC-SVM. Shock and Vibration. 2016. Vol. 2016, no. 2016, pp.1-12.
https://search.emarefa.net/detail/BIM-1119207
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1119207