共 49 条
Metabolism and difference iterative forecasting model based on long-range dependent and grey for gearbox reliability
被引:9
作者:
Liu, He
[1
]
Song, Wanqing
[1
]
Zio, Enrico
[2
,3
,4
]
机构:
[1] Shanghai Univ Engn Sci, Sch Elect & Elect Engn, Shanghai, Peoples R China
[2] Politecn Milan, Energy Dept, Via La Masa 34-3, I-20156 Milan, Italy
[3] PSL Res Univ, CRC, MINES ParisTech, Sophia Antipolis, France
[4] Kyung Hee Univ, Dept Nucl Engn, Coll Engn, Seoul, South Korea
来源:
关键词:
Fractional Levy stable motion;
Grey model;
Metabolism method;
Difference iterative form;
Gear degradation;
REMAINING USEFUL LIFE;
PREDICTION;
D O I:
10.1016/j.isatra.2021.05.002
中图分类号:
TP [自动化技术、计算机技术];
学科分类号:
0812 ;
摘要:
The reliability prediction of gearbox is a complex and challenging topic. The purpose of this research is to propose a hybrid difference iterative forecasting model to forecast reliability of the gearbox. On this score, a hybrid model based on the fractional Levy stable motion (fLsm), the Grey Model (GM) and the metabolism method is proposed. To solve the problem of insensitivity to weak faults inside the gearbox, we use feature extraction method to reveal the gearbox degradation. Then, the least square theory is used to separate the degradation sequence in the gearbox into a deterministic term with monotonicity and a stochastic term with Long-Range Dependence (LRD). Next, the fLsm with LRD and non-Gaussian is used to forecast the stochastic term, the deterministic term is simulated by the GM, and the hybrid forecasting model is used to modify the prediction results. The metabolism method is used to update the degradation sequence and to forecast longer-term trend. Finally, a case demonstrated that superiority and generality of the hybrid forecasting model. (c) 2021 ISA. Published by Elsevier Ltd. All rights reserved.
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页码:486 / 500
页数:15
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