中国空间科学技术

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航天器热平衡试验中平衡温度的预测

翁建华,潘增富,闵桂荣   

  1. 同济大学,北京空间飞行器总体设计部,中国空间技术研究院
  • 发布日期:1997-12-25

PREDICTION OF EQUILIBRIUM TEMPERATURE IN SPACECRAFT THERMAL BALANCE TESTING

Weng Jianhua(Tongji University,Shanghai 200092)Pan Zengfu(Beijing Institute of Spacecraft System Engineering,Beijing 100086)Min Guirong(Chinese Academy of Space Technology,Beijing 100081))   

  • Published:1997-12-25

摘要： 利用航天器热实验的测点数据，采用最小二乘非线性回归来预测热平衡温度。结果表明，当工况进行到一定时间后，测点温度随时间的变化将进入稳定的指数规律，最小二乘非线性回归可有效地预测热平衡温度，回归数据的选取对预测结果有影响。

关键词: 航天器, 热平衡, 最小二乘法, 非线性预测, 试验

Abstract: Nonlinear regression based on Least square method is used to predict the equilibrium temperature with experimental data,The results are in accordance with the analysis that the measured temperature will exponentially vary with time from a certain moment after the beginning of the experiment.case,and the equilibrium teperature can be predicted efficiently by the method.The choosing of regression data is important to the reasonableness of the predicted equilibrium temperature,while choosing of the initial value of the regression parameters will not affect the results when they are convergent.