| 转子-支承-机匣系统碰摩试验及特征提取 |
| |
| 引用本文： | 梁智超,张振波,刘书国,洪杰.转子-支承-机匣系统碰摩试验及特征提取[J].航空动力学报,2014,29(3):604-611. |
| |
| 作者姓名： | 梁智超 张振波 刘书国 洪杰 |
| |
| 作者单位： | 1. 北京航空航天大学 能源与动力工程学院,北京 100191; |
| |
| 摘 要： | 针对航空发动机转子系统的结构特征和转静件碰摩的动力学特征，建立了转子-支承-机匣系统碰摩模拟试验器.对叶片与机匣间轻微碰摩和严重碰摩两种工况下转子和机匣振动响应进行了试验测量，并基于连续小波变换和连续小波包能量的时-频分析方法分别对转子和机匣的振动信号进行了特征提取.结果表明机匣响应信号同时包含高频冲击信号和低频摩擦信号，轻微碰摩时以碰撞冲击效果为主，机匣响应主要为高频冲击信号；严重碰摩时摩擦效应增强，可为碰摩故障诊断和识别提供方法和依据.
|
| 关 键 词： | 叶片 转子 机匣 碰摩 时-频分析 |
| 收稿时间： | 1/9/2013 12:00:00 AM |
Experiment and characteristics extraction of rub-impact in rotor-support-case system |
| |
| LIANG Zhi-chao,ZHANG Zhen-bo,LIU Shu-guo and HONG Jie.Experiment and characteristics extraction of rub-impact in rotor-support-case system[J].Journal of Aerospace Power,2014,29(3):604-611. |
| |
| Authors: | LIANG Zhi-chao ZHANG Zhen-bo LIU Shu-guo and HONG Jie |
| |
| Institution: | 1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;2. Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China |
| |
| Abstract: | A rotor-support-case system simulated test rig was established by considering the structure characteristics and dynamic characteristics in blade to case rub-impact of aero-engine.The responses of both slight rub-impact and serious rub-impact were measured.Time frequency analysis methods, continuous wavelet transform and wavelet packet energy were used to perform the feature extraction of rotor and case.The results indicate that the response of case contents both high frequency signal and low frequency signal. The high frequency signal in case is mainly attributable to impact during slight rub-impact,and the friction effect is improved in serious rub-impact.As a conclusion,it may play a role in rub-impact fault diagnosis and identification. |
| |
| Keywords: | blade rotor case rub-impact time-frequency analysis |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
| 点击此处可从《航空动力学报》下载免费的PDF全文 |
