The Effect of Signal Propagation Delay on the Measured Vibration in Planetary Gearboxes

作     者：Marc Hilbert Wade A.Smith Robert B.Randall 

作者机构：LIACSLeiden UniversityRapenburg 702311 EZLeidenThe Netherlands School of Mechanical and Manufacturing EngineeringUniversity of New South WalesUNSWSydneyNSW2052Australia 

出 版 物：《Journal of Dynamics, Monitoring and Diagnostics》 (动力学、监测与诊断学报（英文）)

年 卷 期：2022年第1卷第1期

页      面：9-18页

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：The part of this research conducted at the University of New South Wales was supported by the Australian Government through the Australian Research Council Discovery Project DP160103501 

主　　题：gear diagnostics phase modulation planetary gearbox propagation delay 

摘      要：Modulation of the gear mesh vibration is a major field of research for the condition monitoring of planetary *** modulation creates sidebands around the gearmesh frequency in the vibration spectrum,and the distribution of these sidebands has been researched in numerous *** publications on the subject assume that the effect of the time varying signal propagation delay between the main vibration source–the gear mesh point(s)–and the(usually fixed)transducer can be *** paper investigates the validity of this *** do so,a planetary gearbox with a transducer mounted on the(fixed)ring gear is studied,and the effect of the propagation delay is modelled as a phase modulation of the gear mesh *** expressions are then derived for the distribution and strength of the modulation sidebands,and these expressions are applied to quantify the effect of the propagation delay on five industrial *** results show that the amplitude of the sidebands is negligible and would not interfere with condition assessment based on analysis of the modulation of the gear mesh frequency,and thus the propagation delay can be neglected for practical purposes.