二氧化碳探测仪瞬态热分析模型修正  

Correction for transient thermal analysis model of Carbon Dioxide detector

作　　者：李强[1,2] 陈立恒 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院大学,北京100049

出　　处：《中国空间科学技术》2017年第3期44-52,共9页Chinese Space Science and Technology

基　　金：国家"863"计划(2013AA122001)

摘　　要：为实现碳卫星载荷在轨温度的准确预测,对其试验状态瞬态热分析模型的修正进行研究。先比较热分析计算结果与热平衡试验结果,求出两者对应温度监控点的温差;再利用蒙特卡洛法对二氧化碳探测仪热分析模型参数进行灵敏性分类,将模型参数分为整体灵敏、局部灵敏与不灵敏参数。然后根据热平衡试验数据,用拉丁超立方和单纯形法的混合法对模型各个参数进行分层修正,得到满足目标函数各个灵敏性参数的最优值。最后将参数最优值代入热分析模型计算验证该修正方法正确性,并进行残差分析。结果显示修正后各温度监控点热分析计算与热试验温差δa小于±0.5℃,残差修正率θ高于80%,修正后多数温差比修正前减少了一个数量级。结果表明修正取得的效果明显,修正方法合理可行。In order to accurately predict the on-orbit temperature of the Tan-Sat loading,the research for transient thermal analysis model correction under test conditions was presented.Compared the results between thermal analysis calculation and thermal balance test,temperature differences of the temperature monitors were confirmed.Parametric sensitivity analysis of carbon dioxide detector thermal analysis model was completed by the Monte Carlo method,and model parameters were divided into global sensitive,local sensitive andinsensitive parameters.According to the data of thermal balanced test,the Latin hypercube sampling and simplex mixed methods were applied to correct model parameters by the classification layer by layer,and the optimal values were calculated.These values were taken into the thermal analysis model to verify the accuracy of the correction method and analyze the residual error.Correction results show that the corrected temperature differenceδais less than ±0.5℃ for all the temperature monitors,the residual error correction ratesθare greater than 80%,while most temperature differences reduce an order of magnitude after correction.These results illustrate the correction is effective and the method is reasonable and feasible.

关 键 词：CO2探测仪 模型修正 热平衡 热分析 灵敏性分类 蒙特卡洛法 分层修正 

分 类 号：V416.5[航空宇航科学与技术—航空宇航推进理论与工程]