作者：喻洪平1, 董万福1, 刘宇2
作者单位：1. 成都大学工业制造学院, 四川成都 610106;
2. 电子科技大学机电工程学院, 四川成都 610054
关键词：检测技术; CAT技术; 变速箱; FFT算法; 噪声测试
摘要：
为了实现对汽车变速箱总成振动噪音的定量测量和定位判断,根据线性系统振动噪声的频谱叠加机理分析,阐述了变速箱各档配对齿轮啮合频率与啮合噪声外在表现的联系,研究了基于FFT实现的变速箱齿轮噪声CAT测试系统,并对有关误差进行了分析。实验数据证明,该系统能够满足工业生产的实时测试要求。
Application of CAT technology on gearbox noise measurement
YU Hong-ping1, DONG Wan-fu1, LIU Yu2
1. School of Manufacturing Science, Chengdu University, Chengdu 610106, China;
2. School of Mechanism and Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Abstract: In order to solve the problem about the location of gearbox noise source and measure the value, noise mechanism of automobile gearbox was investigated.The relation between noise intensity and gear meshing frequency was analyzed.The computer aided noise testing system of automobile gearbox was designed based on FFT, and the error of the testing system was investigated.Experiments show that it could meet the demand of real-time testing and data processing used in industrial production.
Keywords: Testing technology; CAT; Gearbox; FFT; Noise measurement
2009, 35(4): 90-93 收稿日期: 2008-10-6;收到修改稿日期: 2008-12-18
基金项目:
作者简介: 喻洪平(1972-),男,讲师,主要从事精密仪器与机械、自动化测试系统方面的应用研究。
参考文献
[1] 吴 铭.国外噪声测试技术[M].北京:科学文献出版社,1982.
[2] 李翠薇,秦树人,杨昌祺.虚拟式声强分析仪[J].重庆大学学报,2003,12(12):18-22.
[3] Ctteny S Y, Evans B. Implementation of signal power estimation methods[J]. IEEE Trans. on Circuits and Digit.Signal Proc.,March,1997,44(3):240-250.
[4] 梁 杰,孙 巍,惠 月.虚拟式噪声测试分析系统的研制[J].实验技术与管理,2004,2(21):50-52.
[5] 卢学军,魏 智.变速箱噪声的频谱分析与故障诊断[J].振动与冲击,1999,2(18):75-77.
[6] 陈 光礻禹,林 峰.CAT工作站测试软件平台的设计与实现[J].电子学报,1997,11(11):117-119.
[7] Kinswer W,Langi A. Speech and image signal compression with wavelets[C]. Signal Processing Technologies and Applications,IEEE Inc.,1995(9):110-118.
