进气道实验中动态数据采集及处理方法研究  

A Research on the Dynamic Data Sampling and Processing in Air-inlet Duct Test

作　　者：惠增宏[1] 张理[1] 竹朝霞[1] 肖春生[1] 

机构地区：[1]西北工业大学翼型研究中心,西安710072

出　　处：《实验力学》2002年第1期49-54,共6页Journal of Experimental Mechanics

摘　　要：本文介绍了进气道实验中动态数据采集及处理方法 ,研究了滤波器截止频率以及进气道不同流量对动态畸变指数的影响 ,对在干扰状态下得到的数据以传统方法、统计方法、误差方法进行了分析及处理 ,并对所得到的实时数据进行了频谱分析 .This paper introduced some ways on the dynamic data sampling and processing in Air-inlet duct test. Factors (include the cut-off frequency of filters and flux in Air-inlet duct) which may affect the exponent of dynamic aberrance were studied. The three methods (traditional way, statistical way and error way) in data analysis are compared in interfered conditions, and frequency analyses are made for some real data.

关 键 词：进气道 动态畸变指数 动态数据采集 滤波器 截止频率 干扰 频谱分析 

分 类 号：V211.48[航空宇航科学与技术—航空宇航推进理论与工程]