支持向量机
控制理论(社会学)
计算机科学
直升机旋翼
故障检测与隔离
熵(时间箭头)
人工智能
转子(电动)
模式识别(心理学)
断层(地质)
工程类
物理
机械工程
控制(管理)
量子力学
地震学
执行机构
地质学
作者
Lan Lan,Xiao Liu,Qian Wang
标识
DOI:10.1177/00202940221135917
摘要
Rotor unbalance faults are one of the high-frequency faults in rotating machinery. As such, their accurate and timely diagnosis is important. In contrast to traditional methods based on static features, the dynamics features and support vector machines (SVM) are combined for the accurate detection and classification of rotor unbalance faults. First, the dynamical trajectories of the rotor system associated with unbalance faults are accurately identified locally based on the deterministic learning theory, which is more sensitive to abnormal changes in the rotor system. Second, entropy dynamics features, including the sample entropy, fuzzy entropy, and permutation entropy, are extracted based on the obtained dynamical trajectory data. Finally, the dynamics features are used to train the fault classifier based on the SVM with a Gaussian kernel function. Experiments on a rotor unbalance fault test rig demonstrate the effectiveness of the proposed method. The accurate detection and classification of rotor unbalance faults were also achieved compared with the results of employing static time or frequency features.
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