Performance degradation trend prediction method for rotating machinery based on QWGRUNN

被引:0
|
作者
Li F. [1 ]
Xiang W. [1 ]
Wang J. [2 ]
Tang B. [3 ]
机构
[1] School of Manufacturing Science and Engineering, Sichuan University, Chengdu
[2] School of Aeronautics and Astronautics, Sichuan University, Chengdu
[3] State Key Lab of Mechanical Transmission, Chongqing University, Chongqing
来源
关键词
Permutation entropy; Quantum computation; Quantum weighted gated recurrent unit neural network (QWGRUNN); Rotating machinery; Trend prediction;
D O I
10.13465/j.cnki.jvs.2019.01.018
中图分类号
学科分类号
摘要
A novel performance degradation trend prediction method of rotating machinery was proposed based on the quantum weighted gated recurrent unit neural network (QWGRUNN). Firstly, the performance degradation index set for rotating machinery was constructed by using the wavelet denoise-permutation entropy method. Then, this index set was input in to QWGRUNN to accomplish the performance degradation trend prediction of rotating machinery. On the basis of gated recurrent unit (GRU), qubits were introduced in QWGRUNN to represent network weights and activity values, quantum phase-shift gates were constructed to update weight-qubits and activity-qubits, and improve the network generalization capacity and the performance degradation trend prediction accuracy of the proposed method. Finally, the dynamic learning parameter appropriate to the structure of QWGRUNN was adopted to improve the network convergence speed and the computation efficiency of the proposed method. The example of performance degradation trend prediction for rolling bearing verified the effectiveness of the proposed method. © 2019, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码:123 / 129and158
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