Research on A Checking Method of Vibration Characteristics for Test System  

作　　者：Men Xiu hua Xu Jia LiuBaojian Fu Xiuli 

机构地区：[1]School ofMechanical Engineering, University of Jinan [2]Xi’anAircraftCompany [3]Sa ic-ivecoHongyan Commercia l Vehicle CO.LTD

出　　处：《仪器仪表学报》2013年第S1期165-170,共6页Chinese Journal of Scientific Instrument

基　　金：Shan Dong Scientific Research Foundation for Excellent Young Scientists(Grant No:BS2011ZZ001);National Natural Science Foundation of China(Grant No.51105172)

摘　　要：To ensure the accuracy and precision of vibration test,a universal checking method is proposed.The use of the method is discussed and an actual example is given.First,the calibration of the 7703A-500 type sensor is analyzed on the basis of frequency response method.The frequency range of normal working can be determined by the exact calibration of sensitivity,frequency response and linearity.For the basic problem of abnormal signals appearing in test system,the method of zero check and loading vibration source are developed.The frequency spectrum of output signals is employed to distinguish the noise signal,unknown source signal and useful signal effectively.Finally,the experimental results reveal the importance to improve the accuracy of the results of practical vibration test.To ensure the accuracy and precision of vibration test,a universal checking method is proposed.The use of the method is discussed and an actual example is given.First,the calibration of the 7703A-500 type sensor is analyzed on the basis of frequency response method.The frequency range of normal working can be determined by the exact calibration of sensitivity,frequency response and linearity.For the basic problem of abnormal signals appearing in test system,the method of zero check and loading vibration source are developed.The frequency spectrum of output signals is employed to distinguish the noise signal,unknown source signal and useful signal effectively.Finally,the experimental results reveal the importance to improve the accuracy of the results of practical vibration test.

关 键 词：VIBRATION test sensor CALIBRATION SIGNAL sensitivity LINEARITY FREQUENCY RESPONSE 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]