A positive energy residual (PER) based planetary gear fault detection method under variable speed conditions
| Autor: | Moussa Hamadache, Jungho Park, Byeng D. Youn, Kyumin Na, Yunhan Kim, Jong Moon Ha |
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| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Computer science Mechanical Engineering Aerospace Engineering Wavelet transform 02 engineering and technology Fault (power engineering) Residual 01 natural sciences Fault detection and isolation Computer Science Applications Vibration symbols.namesake 020901 industrial engineering & automation Control and Systems Engineering Feature (computer vision) Control theory 0103 physical sciences Signal Processing symbols 010301 acoustics Gaussian process Energy (signal processing) Civil and Structural Engineering |
| Zdroj: | Mechanical Systems and Signal Processing. 117:347-360 |
| ISSN: | 0888-3270 |
| Popis: | Most existing studies on vibration-based fault detection for planetary gears were developed and tested under constant speed conditions. Recently, some methods were developed to consider the variability of the rotating speed; however, these methods have limitations. Specifically, these methods are applicable only for small fluctuations of speed, or the methods require additional angular information as an input. This paper thus proposes a new method, the positive energy residual (PER) method, for fault detection of planetary gears. PER does not require the assumption of only small fluctuations of speed, nor does it need angular information. The proposed PER algorithm is based on two techniques, the wavelet transform (WT) and the Gaussian process (GP), which are used to remove the variability of the signals while extracting the faulty signals. Further, a fault feature is presented that is able to effectively quantify the characteristics of faulty signals. The performance of the proposed method is demonstrated using two case studies: vibration signals from a simulation model and vibration signals from a real test-bed. A comparison study with other methods, WT and energy residual (ER), is also presented to clarify the performance of the proposed PER algorithm. From the results, we conclude that the proposed PER method is capable of detecting faults of a planetary gear under variable speed conditions, while showing better performance than the two other methods. |
| Databáze: | OpenAIRE |
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