基于Kriging模型的风洞应变天平静态校准方法

doi:10.7527/S1000-6893.2016.0069

Abstract

Abstract:

A new static calibration method for strain-gage balance used in wind tunnel test is introduced here. A design of experiments (DOE) method, Latin hypercube design, is used to choose samples. Kriging surrogate models constructed by using first order regression base function and EXP correlation function are mathematical models which predict loads by taking measured voltage increments and other factors as parameters, and six-component combining load calibration technique is used too. Compared with the traditional one factor at a time (OFAT) method, the new method not only has equivalent accuracy, but also remarkably reduces the number of samples. The new method is used in the calibration of some balance which is used to measure the thrust of a vector nozzle, and predicted thrust forces well. It figures out the interference of gas inflow which is hardly handled by traditional calibration method.

Key words: Kriging model, design of experiments, strain-gage balance, calibration, wind tunnel

CLC Number:

V216

LIU Zhiyong, MIAO Lei, TAO Yang, ZHANG Yi, WANG Shumin. A static calibration method of wind tunnel strain-gage balance based on Kriging model[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(12): 3685-3691.

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A static calibration method of wind tunnel strain-gage balance based on Kriging model

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