Analysis of Temperature Uniformity in a Spacecraft Thermal-Cycling Test System Based on Wavelet Transform and Multiple Regression

Abstract

Abstract:

A model for predicting the temperature uniformity in a thermal cycling test system for space application was proposed in this paper based on experimental data, wavelet transform and multivariate statistical analysis. The turbulent pressure signals were decomposed and reconstructed by wavelet analysis, and the correlation of the temperature nonuniformity factor with other variables were obtained by multiple regressions. An experiment was conducted to validate the proposed model. In addition, the wavelet transform was proved to have the potential to improve the accuracy of the prediction.
spacecraft; thermal cycling test; temperature uniformity; wavelet transform; multiple regression

Key words: spacecraft, thermal cycling test, temperature uniformity, wavelet transform, multiple regression

CLC Number:

V 416.5

YANG Guang,WU Jingyi. Analysis of Temperature Uniformity in a Spacecraft Thermal-Cycling Test System Based on Wavelet Transform and Multiple Regression[J]. Journal of Shanghai Jiaotong University, 2014, 48(09): 1346-1350.

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