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国外文献 > 1.轴承 > 1. 基础理论与机制 > 动力学与稳定性


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标 题: A comparative study on damage detection in speed-up and coast-down process of grinding spindle-typed rotor-bearing system
磨削主轴式转子轴承系统的加速与减速过程中的损伤检测比较研究
作 者: B. S. Kim
S. H. Lee
M. G. Lee
J. Ni
J. Y. Song
C. W. Lee
关键词: Damage detection  [损伤检测]
Speed-up and coast-down process  [ 加速和减速过程]
Vibration signal-based monitoring  [ 基于振动信号的监测]
Non-stationary signal processing method  [ 非平稳信号处理方法]
Rotor-bearing system  [ 转子轴承系统]
出版年: 2007
期刊名: Journal of Materials Processing Technology
材料加工技术杂志
年卷期: 2007, vol.187-188
摘 要: In this paper, the damage detection from non-stationary mechanical vibration signals collected during acceleration and deceleration was performed. A laboratory grinding spindle-typed rotor-bearing system was equipped, and modal testing was carried out to identify system characteristics and operating range. Time-frequency analysis method such as Fast Fourier Transform (FFT), Short-Time Fourier Transform (STFT), Wigner-Ville Distribution (WVD), and Discrete Wavelet Transform (DWT) was applied to vibration data of normal rotor and shaft-cracked rotor in speed-varying process and the results of feature extraction from shaft-cracked condition were also compared with those in normal condition.

本文对加速和减速过程中采集的非稳态机械振动信号进行了损伤检测。搭建了一个实验室用磨削主轴型转子轴承系统,并通过模态试验确定系统的特性及工作范围。采用快速傅里叶变换(FFT)、短时傅里叶变换(STFT)、维格纳- Ville分布(WVD)和离散小波变换(DWT)等时频分析方法,对变速过程中的正常转子和轴裂纹转子的振动数据进行分析,并将轴裂纹状态下的特征提取结果与正常状态下的结果进行比较。
中文内容为网络AI翻译,专业术语未必准确,仅供参考。

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