期刊
RELIABILITY ENGINEERING & SYSTEM SAFETY
卷 138, 期 -, 页码 219-231出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ress.2015.02.001
关键词
Support vector machines (SVMs); Particle swarm optimization (PSO); Aircraft engine; Remaining useful life and reliability; prediction
资金
- Government of the Principality of Asturias through Programme of Science, Technology and Innovation (PCTI) of Asturias [FC-11-PC10-19]
The present paper describes a hybrid PSO-SVM-based model for the prediction of the remaining useful life of aircraft engines. The proposed hybrid model combines support vector machines (SVMs), which have been successfully adopted for regression problems, with the particle swarm optimization (PSO) technique. This optimization technique involves kernel parameter setting in the SVM training procedure, which significantly influences the regression accuracy. However, its use in reliability applications has not been yet widely explored. Bearing this in mind, remaining useful life values have been predicted here by using the hybrid PSO-SVM-based model from the remaining measured parameters (input variables) for aircraft engines with success. A coefficient of determination equal to 0.9034 was obtained when this hybrid PSO-RBF-SVM-based model was applied to experimental data. The agreement of this model with experimental data confirmed its good performance. One of the main advantages of this predictive model is that it does not require information about the previous operation states of the engine. Finally, the main conclusions of this study are exposed. (C) 2015 Elsevier Ltd. All rights reserved.
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