温度外推预报技术在热平衡试验中的应用研究

Application Research of Temperature Extrapolation Technology in Thermal Balance Test

在航天器的稳态热平衡试验中 ,应用温度外推预报技术可以准确的给出航天器热平衡极限温度 ,缩短热平衡试验时间 ,从而降低航天器研制成本。文章对非线性最小二乘估计和广义卡尔曼滤波 (EKF)两种温度外推预报方法在航天器热平衡试验中的应用做了相关的研究。

In thermal balance test of the spacecraft, using temperature extrapolation technology obtain the ultimate thermal balance temperature of the spacecraft can be predicted accurately and the test duration can be shortened, and the development cost of the spacecraft can be reduced accordingly. The nonlinear least-squares estimation and the extended Kalman filtering (EKF) are two of the most pervasive extrapolation and prediction methods, some important engineering problems about how to apply these two methods in spacecraft thermal balance test are discussed.