摘要
在简述了传递路径分析(TPA)方法的基本原理与局限性的基础上,提出一种实用的传递函数无偏估计方法,并改进了测试方法。从而可以在实车工作情况下,利用振动测试中容易测得的数据进行传递路径分析,提高了分析计算精度,简化了测试过程,并缩短了测试时间。应用MatLab编写了测试数据的后处理程序,并以国产某轿车为例验证了该方法的正确性。
The past progress in transfer path analysis(TPA) and its limitations were reviewed.A innovative unbiased estimative methodology of transfer functionis was introduced and applied.The measurement method of transfer function was improved.Then TPA using the data of easy measurement in operational condition of vehicle can be put in practice.Accuracy of transfer function was improved,the process of measurement was predigested,and time was decreased.A data post-processing program of measurement was written by MatLab.Finally,the improvement of TPA was validated through idling vibration of engine transmitting to compartment.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2009年第S1期78-82,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
"863"国家高技术研究发展计划项目(2006AA110102)
关键词
车辆工程
传递函数无偏估计
测试简化
传递路径分析
实例验证
vehicle engineering
unbiased estimation of transfer function
predigestion of test
transfer path analysis
example of validation
