一种高精度的频响函数测试方法

A Measuring Method of the Frequency Response Function with High Precision

本文简要地介绍了南京航空航天大学振动工程研究所的ＭＤＣ－２型多通道动态数据采集系统，提出了一种迭代算法和加窗数字相关滤波算法．数字模拟表明：这两种方法较普通数字相关滤波算法更优．应用ＭＤＣ－２系统和提出的算法可以实现高精度的频响函数测试。文中阐述了实现这种测试的步骤．

This paper outlines MDC-2 multi-channel dynamic data acquisition system developed by the Institute of Vibration Engineering Research in Naming University of Aeronautics and Astronautics.A kind of iterative algorithm and weighting digital correlation filter algorithm is presented.The digital simulation showes that the two methods are better than the general digital correlation filter algorithm. The application of the methods and MDC-2 system can implement to measure the frequency response function with high precision,and the steps for measurement are introduced.