基于时变传输路径的太阳轮故障窄带解调分析方法

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摘要行星齿轮箱是风力机传动装置的重要组成部分，其振动特征提取在故障诊断领域具有重要意义。为此，提出了一种适合故障特征信号解调及时变传递路径的太阳轮故障窄带解调分析方法。首先利用Tukey窗对振动信号进行加窗处理；其次利用计算阶比跟踪对加窗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；最后对加窗角域平均信号进行窄带解调分析，通过其阶比频谱编辑分离出太阳轮故障相关阶比分量后转换到角域信号，获取太阳轮故障特征及故障位置。实验数据分析结果表明，该方法能有效识别太阳轮故障特征信息。

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	王志乐1
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	郭瑜2
	王波1

关键词 ：太阳轮, 频谱编辑, 窄带解调分析, 角域同步平均

Abstract：A planetary gearbox is the crucial component of a wind turbine device.A method for analyzing sun gear faults, which is suitable for the cases of fault characteristic signal demodulation and time-varying transmission path, was proposed.First, the fault vibration signal was processed by adding the Tukey window function, and the windowed signal in time domain was sampled at constant angle increments according to the computed order tracking (COT), which converts the non-stationary signal in the time domain into the stationary one in the angle domain.Then, the angle-domain signal was processed by the signal synchronous average (SA) and successively by the narrow-band demodulation. Finally, the fault order components of the sun gear were seperated from the edited order spectrum and retransformed into the angle-domain to further obtain the sun gear fault features and locations.Tests were conducted to verify the validity of the proposed method.

Key words： Sun gear Spectrum edit Narrowband demodulation analysis Angle domain synchronous average

收稿日期: 2018-01-30 出版日期: 2019-07-15

引用本文:

王志乐1,2，郭瑜2，王波1. 基于时变传输路径的太阳轮故障窄带解调分析方法[J]. 振动与冲击, 2019, 38(14): 63-67.
WANG Zhile1,2,GUO Yu2,WANG Bo1. Narrowband demodulation analysis of sun gear faults in consideration of the time-varying transmission path. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(14): 63-67.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I14/63

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