The Demodulating Principle of Autocorrelation-Envelope and its Application to Gearbox Diagnosis

Author:

Bi Zhan Dong1,Chen Yong1,Peng Zhi Zhao1,Zhang Yu1

Affiliation:

1. Academy of Armored Forces Engineering

Abstract

As the most important transmission system of vehicles, the gearbox has a high fault rate, so it is meaningful to evaluate and diagnose its health condition and faults accurately. Autocorrelation -envelope analysis is a fault diagnosis method that can suppress the noise and reserve the periodic components of vibration signals. A conclusion has been deduced: amplitude modulated, frequency modulated, or amplitude& frequency modulated signals can be transformed into amplitude modulated signals with the same modulation frequency through autocorrelation processing. Therefore, the aucorrelation-envelope technique is suitable for extracting the fault features of gearbox from its vibration signal with the coexistence of amplitude modulation and frequency modulation. The simulation results verify the validity of the conclusion and the experiment of vehicle gearbox diagnosis indicates the effectiveness of this method.

Publisher

Trans Tech Publications, Ltd.

Reference7 articles.

1. J. Antoni, R. B. Randall, Differential Diagnosis of Gear and Bearing Faults [J]. Journal of Vibration and Acoustics, April, 2002, Vol. 124: 165-171.

2. LIN Jing, LIU HongXing, QU LiangSheng. Envelope characteristic recognition and its application in mechanical fault diagnosis [J]. Journal of Vibration, Measurement & Diagnosis, 1998, 11(8): 34-38(In Chinese).

3. HU GuangShu. Digital signal processing [M]. 2nd ed. Beijing: Tsinghua University Press, 2003: 33-39; 2003: 496-499(In Chinese).

4. SUN Hui, ZHU ShanAn. Hilbert-Huang transform demodulation based on delayed autocorrelation pretreatment [J]. Journal of Zhejiang University: Engineering Science Edition, 2005, 30(2): 1998-2001(In Chinese).

5. MENG Tao, LIAO MingFu, LI Hui. Detection and diagnosis of the gear fault by the delayed correlation envelope technique [J]. Journal of Aerospace Power, 2003, 18(1): 109-113(In Chinese).

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3