4.7 Article

New Condition-Based Monitoring and Fusion Approaches With a Bounded Uncertainty for Bearing Lifetime Prediction

期刊

IEEE SENSORS JOURNAL
卷 22, 期 9, 页码 9078-9086

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2022.3159624

关键词

Prognostics and health management; Feature extraction; Uncertainty; Vibrations; Predictive models; Degradation; Wind turbines; Fusion approaches; bearings; wind farms; lifetime prediction; bounded uncertainty

资金

  1. Natural Sciences and Engineering Research Council of Canada
  2. Ontario Centers of Excellence
  3. Advanced Center for Electrical and Electronic Engineering, AC3E, CONICYT [FB0008]

向作者/读者索取更多资源

In this paper, high-level fusion methods are employed to predict the Remaining Useful Life (RUL) of wind turbine bearings. Vibration signals are used to extract various features and capture deterioration paths. A Bayesian algorithm is utilized to determine the RUL for each selected feature. High-level fusion schemes are then employed to integrate RUL numbers and reduce uncertainty in the prediction horizons. Experimental results confirm accurate results with bounded uncertainty for the high-level fusion approaches.
Condition Monitoring (CM) is an essential element of securing reliable operating conditions of Wind Turbines (WT) in a wind farm. CM helps optimize maintenance by providing Remaining Useful Life (RUL) forecast. However, the expected RUL is not often reliable due to uncertainty associated with the prediction horizon. In this paper, we employ high-level fusion methods to expect the RUL of WT bearings. For this purpose, various features are extracted by vibration signals to capture deterioration paths. Then, a Bayesian algorithm is utilized to determine RUL for each selected feature. Eventually, high-level fusion schemes, including Hurwicz, Choquet integral, Ordered Weighted Averaging operator, are employed to integrate RUL numbers and lessen associated uncertainty in the prediction horizons. Besides, a pessimistic fusion strategy is driven to obtain a bounded uncertainty for the worst RUL prediction. The fusion methods are assessed by ten-year vibration signals of Canadian wind farms. Experimental results confirm accurate results with bounded uncertainty for high-level fusion approaches.

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