Dynamic modeling and analysis for the identification of gear localized faults in planetary gearboxes under eccentricity effects

IF 4.9 2区 工程技术 Q1 ACOUSTICS
Jiawei Fan , Yu Guo , Enrico Zio , Hugo Andre , Jing Na , Xingchao Yin
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引用次数: 0

Abstract

Planetary gearboxes are widely used in heavy industries such as wind power, transportation, and manufacturing, and their reliability is critical for ensuring the stable operation of mechanical systems. Fault detection and diagnosis in planetary gearboxes are important for ensuring system safety. In gear transmission systems, the features of localized faults typically manifest as sidebands around the meshing frequency in the spectrum or as gear rotation frequency in the envelope spectrum. However, factors such as gear eccentricity and shaft runout can also produce localized gear fault-like spectral features. This makes it difficult to detect localized faults based on characteristic spectral line analysis and sideband energy ratio, especially in complex systems like planetary gearboxes. Recently, the instantaneous angular speed (IAS) signal has emerged as a promising alternative, offering advantages such as eliminating the need for order tracking and being unaffected by time-varying signal transmission paths in planetary gear sets. In this work, we develop a modified planetary gearbox dynamic model and investigate the effects of gear fault and eccentricity on mesh stiffness. Utilizing the developed model, IAS signals are generated, and their waveforms and order spectra analyzed. Additionally, we propose an abnormal-preserving spectral component reconstruction method to extract and enhance abnormal components within the signal. The results indicate that localized gear fault and eccentricity exhibit the same periodicity, both generating fault-related sidebands around meshing orders in the order spectrum, and fault characteristic components in the envelope spectrum. However, after abnormal component reconstruction, gear faults exhibit distinct periodic jitters, accompanied by a significant increase in kurtosis. In contrast, the kurtosis of the reconstructed signal in the case of gear eccentricity does not show a noticeable increase. This distinction allows the accurate identification of gear localized fault in gear systems. The findings are validated experimentally on a planetary gearbox test rig.
偏心影响下行星齿轮箱齿轮局部故障识别的动力学建模与分析
行星齿轮箱广泛应用于风力发电、交通运输、制造业等重工业,其可靠性对于保证机械系统的稳定运行至关重要。行星齿轮箱的故障检测与诊断对保证系统安全具有重要意义。在齿轮传动系统中,局部故障的特征通常表现为频谱中啮合频率附近的边带或包络频谱中齿轮转动频率附近的边带。然而,齿轮偏心和轴跳动等因素也会产生局部齿轮类故障谱特征。这使得基于特征谱线分析和边带能量比的局部故障检测变得困难,特别是在行星齿轮箱等复杂系统中。最近,瞬时角速度(IAS)信号已成为一种有前途的替代方案,其优点包括消除了订单跟踪的需要,并且不受行星齿轮组中时变信号传输路径的影响。本文建立了一种改进的行星齿轮箱动力学模型,研究了齿轮故障和偏心对啮合刚度的影响。利用所建立的模型,生成了IAS信号,并分析了其波形和阶谱。此外,我们还提出了一种保持异常的频谱分量重建方法来提取和增强信号中的异常分量。结果表明,局域齿轮故障和偏心具有相同的周期性,在阶谱上沿啮合阶产生与故障相关的边带,在包络谱上产生故障特征分量。然而,在异常部件重建后,齿轮故障表现出明显的周期性抖动,并伴有峰度的显著增加。相反,在齿轮偏心的情况下,重构信号的峰度没有明显增加。这种区别允许齿轮系统中齿轮局部故障的准确识别。研究结果在行星齿轮箱试验台上得到了验证。
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来源期刊
Journal of Sound and Vibration
Journal of Sound and Vibration 工程技术-工程:机械
CiteScore
9.10
自引率
10.60%
发文量
551
审稿时长
69 days
期刊介绍: The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.
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