内燃机工程2024，Vol.45Issue(2)：75-84,10.DOI:10.13949/j.cnki.nrjgc.2024.02.009
活塞-缸套摩擦副状态表征参数选取方法研究
Research on the Selection Method of State Characterization Parameters of Piston-Cylinder Liner Friction Pairs
魏敬宏 1纪少波 1胡珑渝 1张珂 1张志鹏 1姜颖1
作者信息
- 1. 山东大学 能源与动力工程学院,济南 250100
- 折叠
摘要
Abstract
The diesel engine test bench was set up to collect data,and time-frequency analysis was conducted to determine the correlation between various excitation sources and the vibration signals on the body surface.Variational mode decomposition algorithm was utilized to decompose the vibration signal and extract the characterization parameters of each component.By examining the relationship between torque,rotational speed,lubricating oil temperature,and cylinder clearance with each characterization parameter,the characterization parameter set with a strong correlation was preliminarily determined.The set of characterization parameters mentioned above were analyzed by using multiple evaluation criteria.After analysis,it is determined that the characterization parameters with the highest contribution are the standard deviation,mean square frequency,kurtosis,maximum singular value,and frequency-domain integral of IMF1 and the pulse factor,standard deviation,center of gravity frequency,frequency variance,and maximum singular value of IMF6.关键词
活塞-缸套/故障诊断/表征参数提取/连续小波变换/信号分解算法/多评价准则Key words
piston-cylinder liner/fault diagnosis/characterization parameter extraction/continuous wavelet transform/signal decomposition algorithm/multiple evaluation criteria分类
能源科技引用本文复制引用
魏敬宏,纪少波,胡珑渝,张珂,张志鹏,姜颖..活塞-缸套摩擦副状态表征参数选取方法研究[J].内燃机工程,2024,45(2):75-84,10.
