CAJ | 학술논문

分析设备在轨温度异常变化的3个原因：遥测数据错误、设备周边热边界异常变化和设备内部热状态异常变化,提出用故障树来确定温度异常变化原因的分析方法,并进行实例分析。以某卫星寿命末期蓄电池故障时的遥测温度数据为基础,通过热分析模型进行了多工况的模拟,排除了遥测温度异常、卫星姿态异常、主动控温异常等因素,得出故障是由于电池内部热耗异常增加的结论。
분석설비재궤온도이상변화적3개원인：요측수거착오、설비주변열변계이상변화화설비내부열상태이상변화,제출용고장수래학정온도이상변화원인적분석방법,병진행실례분석。이모위성수명말기축전지고장시적요측온도수거위기출,통과열분석모형진행료다공황적모의,배제료요측온도이상、위성자태이상、주동공온이상등인소,득출고장시유우전지내부열모이상증가적결론。
Abnormal telemetered temperature data and the changes of equipments thermal boundary condition and internal thermal status are the reasons why their temperature changes abnormally.The paper presents the special causes of abnormal telemetrered temperature is determined using fault tree analysis and analyzes a special case.On the basis of telemetered temperature data of a satellite battery fault at the end of lifetime,lots of cases are simulated with the thermal analysis model.Analysis results show that the cause of battery fault is the inner heat dissipation increasing abnormally.And some of other causes,such as telemetered temperature being abnormal,satellite attitude being abnormal and active thermal control loops being abnormal,are excluded.