基于包络角域加窗同步平均太阳轮故障特征提取

发布时间：2018-03-24 13:40

本文选题：行星齿轮箱　切入点：包络分析　出处：《振动与冲击》2017年21期

【摘要】：行星齿轮箱广泛应用于风电机组等大型装备中,其振动特征提取在故障诊断领域有重要意义。但由于存在非平稳、调制、传递路径复杂、传递路径具有时变特性等特点,导致故障响应微弱,往往被强背景噪声所湮没。主要针对包络分析、加窗同步平均、计算阶比跟踪相结合,提出了一种适合弱特征信号解调、时变传递路径及变速工况的包络角域加窗同步平均技术。Tukey窗函数对故障振动信号进行加窗处理,希尔伯特变换(Hilbert)获取故障复包络信号,计算阶比跟踪对复包络信号进行等角度重采样,转换为准平稳角域信号,然后进行同步平均。该方法对太阳轮故障实测振动信号进行分析,实验结果表明,所提出方法能够有效地提取太阳轮故障的特征信息。
[Abstract]:Planetary gearbox is widely used in wind turbine and other large-scale equipment, its vibration feature extraction is of great significance in the field of fault diagnosis, but due to the existence of non-stationary, modulation, complex transfer path, time-varying characteristics of transmission path, etc. As a result, the fault response is weak, which is often annihilated by strong background noise. Aiming at envelope analysis, windowed synchronous averaging and order tracking, a demodulation method suitable for weak characteristic signal is proposed. Time-varying transfer path and variable Speed working condition. The windowed synchronous averaging technique in envelope angle domain. Tukey window function is used to process the fault vibration signal. Hilbert transform (Hilbert transform) is used to obtain the fault complex envelope signal. The order tracking is used to resample the complex envelope signal at equal angles, to convert the quasi-stationary angle domain signal, and then to carry out synchronous averaging. The measured vibration signal of the sun wheel fault is analyzed by this method. The experimental results show that, The proposed method can effectively extract the characteristic information of the sun wheel fault.
【作者单位】：昆明理工大学机电工程学院云南省高校振动与噪声重点实验室;
【基金】：国家自然科学基金(51675251)
【分类号】：TH132.425

【相似文献】