一种容腔效应标定技术及其在高频响动态探针中的应用  

A technique to calibrate cavity effect in unsteady pressure probes with high frequency response

作　　者：李继超[1,2] 王偲臣[1,2] 林峰[1] 聂超群[1] Shoen M P 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院研究生院,北京100190 [3]College of Engineering,Idaho State University

出　　处：《航空动力学报》2011年第12期2749-2756,共8页Journal of Aerospace Power

基　　金：国家自然科学基金(50736007)

摘　　要：介绍一种容腔效应标定方法,以理论模型推导与实验验证相结合的方式,完成了对高频响动态探针的动态标定,并通过ARMAX(自动回归滑动平均)模型辨识得到了容腔的传递函数.结果表明该方法简单可行,能够很好地通过探针的动态响应信号来确定探针容腔的传递函数,从而确定测量信号和真实信号之间的关系,对今后考虑容腔效应的动态标定提供了参考.A technique to calibrate cavity effects was introduced.By combining a simplified theoretical model with experimental verification,the modeling of the transfer function for the pressure probe was established.An ARMAX（autoregressive-moving average with exogenous input） model was used as the base structure of the cavity system and its parameters were identified from experimental data.It is demonstrated that despite its simplicity,this method can well capture the transfer function for the cavity based on the input/output signals,from which the relationship of the true signal and measuring signal can be obtained.This calibration technique is simple and practical,and can be of great value in many applications.

关 键 词：高频响动态探针 容腔效应 阶跃响应 ARMAX(自动回归滑动平均) 模型辨识 

分 类 号：V211.71[航空宇航科学与技术—航空宇航推进理论与工程]