Abstract
The electro-hydraulic servo valve (EHSV) is a crucial element of the electro-hydraulic servo control system connecting electrical and hydraulic parts, and its performance can influence the work efficiency of the entire control system. To identify the types of faults in EHSVs accurately and solve the problems in traditional diagnostic algorithms, a fault diagnostic model using a simulated annealing particle swarm optimized (SA-PSO) support vector machine (SVM) is constructed in the paper. An SA-PSO optimized SVM parametric fault diagnosis model is built, taking static no-load flow, pressure, and internal leakage as the sample input data, and a prescribed label is viewed as the result output. Compared with the models constructed by SVM and PSO-SVM model, the advantages of the model built are proven. Classification accuracy can reach 99.3 %, and high stability can be achieved.
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Yongzhong Fu is currently an Associate Professor of the Department of Mechanical Engineering of Jiangsu University. He is currently the Deputy Director of the Department of Mechanical and Electrical Engineering. He is mainly engaged in CNC technology research work, deep learning in the field of vision research work and fault diagnosis research field.
Lianjie Cai is studying for his Bachelor’s and Master’s degrees in Mechanical Engineering from Jiangsu University, China. His research interests include machine learning, deep learning, and fault diagnosis.
Gang Zheng is an Engineer at Zhenjiang Silian Mechatronics Technology Co. He is currently mainly engaged in hydraulic transmission and control, industrial robots, electric-hydraulic proportional direction valve, and other research work.
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Fu, Y., Cai, L. & Zheng, G. Failure diagnosis of electro-hydraulic servo valve based on SA-PSO-SVM. J Mech Sci Technol 36, 5971–5976 (2022). https://doi.org/10.1007/s12206-022-1113-7
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DOI: https://doi.org/10.1007/s12206-022-1113-7