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。
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.
出处
《中国空间科学技术》
EI
CSCD
北大核心
1997年第6期1-6,33,共7页
Chinese Space Science and Technology
关键词
航天器
热平衡
最小二乘法
非线性预测
Spacecraft Heat balance Lesat square method Nonlinear prediction Test
