高速齿轮动态传动误差的希尔伯特-黄变换分析

发布时间：2018-04-03 12:36

本文选题：高速齿轮　切入点：传动误差　出处：《机械科学与技术》2017年04期

【摘要】：高速齿轮传动误差测量与分析是一个急需解决的难题。通过构建动态传动误差测量系统,测得高速齿轮动态传动误差曲线,并将希尔伯特-黄变换(HHT)应用于高速齿轮动态传动误差信号分析,自适应得到高速齿轮动态传动误差信号不同频率成分的固有模态函数,分离出轴频分量和齿频分量,获得动态传动误差希尔伯特谱。为了验证HHT的可行性与正确性,利用快速傅立叶变换(FFT)对相同的传动误差信号进行频谱分析。结果表明:HHT在高速齿轮动态传动误差信号的分频、滤波方面都具有优越性;相比FFT,希尔伯特-黄变换能够很好的提取信号的高频特征,将传动误差信号各成分分离,分析结果更加精确。
[Abstract]:It is an urgent problem to measure and analyze the error of high speed gear transmission.By constructing a dynamic transmission error measurement system, the dynamic transmission error curve of high speed gear is measured, and the Hilbert-Huang transform HHT is applied to analyze the error signal of high speed gear dynamic transmission.The inherent mode functions of different frequency components of the dynamic transmission error signal of high speed gear are obtained adaptively. The axial frequency component and the tooth frequency component are separated and the Hilbert spectrum of the dynamic transmission error is obtained.In order to verify the feasibility and correctness of HHT, the frequency spectrum of the same transmission error signal is analyzed by fast Fourier transform (FFT).The results show that: HHT has advantages in dividing and filtering the error signal of high speed gear dynamic transmission, and Hilbert-Huang transform can extract the high frequency characteristic of the signal and separate the components of the transmission error signal.The results of the analysis are more accurate.
【作者单位】：中南大学高性能复杂制造国家重点实验室;
【基金】：国家自然科学基金项目(51275530、51535012、51305462)资助
【分类号】：TH132.41

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