运行工况传递路径分析方法研究进展
2015-04-29卢英英成玮陆建涛张周锁
卢英英 成玮 陆建涛 张周锁
摘要:分析了近年來传统TPA(transfer path analysis,TPA)、运行工况TPA(operational TPA,OTPA)、OPAX(operational-X TPA)以及混合TPA方法的基本原理、优势和不足以及工程应用,阐述了功率流法在TPA领域的潜在应用;重点针对OTPA方法,考虑了参考点距离的影响,设计了辐射球声源声传递路径仿真系统和激振器激励矩形板振动传递路径实验系统。结果表明:OTPA值与理论值和实验值的相对误差分别小于5%和8%,与此同时,OTPA方法对噪声很敏感,当噪声较小时,较近参考点有利于提高OTPA方法的精度,因此,应合理布置传感器和设计运行工况;最后,对TPA方法的发展趋势进行了展望。
关键词:机械动力学与振动;运行工况传递路径分析;功率流;声传递路径仿真系统;振动传递路径实验系统
中图分类号:TB533文献标志码:A
Research progress of operational transfer path analysis method
LU Yingying1, CHENG Wei1,2, LU Jiantao1, ZHANG Zhousuo1,2
(1.School of Mechanical Engineering, Xian Jiaotong University, Xian, Shaanxi 710049, China;2.State Key Laboratory for Manufacturing System Engineering, Xian Jiaotong University, Xian, Shaanxi 710049, China)
Abstract: Firstly, the basic principles, the advantages, the disadvantages and the engineering applications of the conventional TPA, OTPA, OPAX and mixed TPA in recent years are comprehensively analyzed. Meanwhile, the potential applications of power flow in the TPA field are especially discussed. Secondly, focused on the OTPA method, an acoustic transfer path system by spherical radiation transfer path simulation system and a vibration transfer path experiment system by a rectangular plate vibrator excitation are designed considering the effects of the distance from reference points. The results show that the relative error between the OTPA values and the theoretical values as well as the experimental values is less than 5% and 8% respectively. At the same time, OTPA is sensitive to noise. When the noise is lower, the nearer reference points can improve the precision of OTPA method. Therefore, it is needed to arrange sensors and design operating conditions reasonably. Finally, the development trend of TPA method is presented.
Keywords:machine dynamics and vibration; operational transfer path analysis (OTPA); power flow; acoustics transfer path simulation system; vibration transfer path experiment system
收稿日期:2015-02-11;修回日期:2015-03-28;责任编辑:李穆
基金项目:国家自然科学基金(51305329);高等学校博士学科点专项科研基金(20130201120040);中国博士后科学基金(2013M532032,2014T70911);陕西省博士后基金
作者简介:卢英英(1989—),女,甘肃庆阳人,硕士研究生,主要从事运行工况传递路径分析方法等方面的研究。
通讯作者:成玮博士。E-mail:chengw@mail.xjtu.edu.cn
卢英英,成玮,陆建涛,等.运行工况传递路径分析方法研究进展[J].河北科技大学学报,2015,36(4):359-367.
LU Yingying, CHENG Wei, LU Jiantao,et al.Research progress of operational transfer path analysis method[J].Journal of Hebei University of Science and Technology,2015,36(4):359-367.随着人们生活质量的不断提高,科技的飞速发展,轿车和高速列车成为人们日常生活中不可缺少的交通工具。振动、噪声和声振粗糙度的性能是评价车辆乘车舒适度的重要指标[1]。水下航行器的声隐身性是衡量其安全性和作战性的重要指标[2],在低、中速航行时,机械设备的振动是其辐射噪声的主要来源[3]。……
