Open AccessFault Diagnosis of Planetary Roller Screw Mechanism Based on Bird Swarm Algorithm and Support Vector Machine
Author(s) -
Maodong Niu,
Shangjun Ma,
Wei Cai,
Jianxin Zhang,
Geng Li
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1519/1/012007
Subject(s) - support vector machine , fault (geology) , swarm behaviour , algorithm , mechanism (biology) , robustness (evolution) , nonlinear system , vibration , frequency domain , computer science , time domain , control theory (sociology) , artificial intelligence , pattern recognition (psychology) , engineering , computer vision , geology , philosophy , biochemistry , chemistry , physics , control (management) , epistemology , quantum mechanics , seismology , gene
Intelligent fault diagnosis of rotating machinery has been widely developed in recent years due to the improvement of computing power, but how to identify the fault states of planetary roller screw mechanism is a difficult problem in practical industrial applications. A fault diagnosis method for planetary roller screw mechanism is proposed by combining with bird swarm algorithm (BSA) and support vector machine (SVM), which shows strong advantages in solving small sample, nonlinear and high-dimensional identification problems, and the bird swarm algorithm with high optimization accuracy and good robustness. In this paper, the vibration data of the planetary roller screw mechanism in two states with and without grease are collected, and features are extracted from the time domain, frequency domain and time- frequency domain, respectively. The predicted accuracy of SVM and BSA-SVM is compared, and the feasibility of the proposed method is verified.