摘要
动量轮作为卫星的关键执行部件,其可靠性与寿命直接影响到卫星在轨任务的执行.对于动量轮产品的寿命预估与分析,受限于样本少、试验周期长、代价高等因素,无法获取足够的寿命样本数据.本文结合工程经验及已有的地面寿命试验数据,采用维纳过程退化模型,对动量轮产品的可靠性进行建模,并对其寿命进行预估与分析.该模型为动量轮寿命预测提供了一种有效方法,适用于高可靠、长寿命产品的寿命预测与分析.
Momentum wheel as a key actuator for satellites, its reliability and life span directly affect the success or failure of satellite missions in orbit. For the life prediction and analysis of momentum wheel products, due to the limited number of samples, long test cycle and high cost, it is impossible to obtain enough life sample data. Therefore, combined with engineering experience and existing ground life test data, the Wiener process degradation model is used to model the reliability of the momentum wheel product, and its life expectancy is estimated and analyzed. The results show that this model provides an effective method for predicting the life of a momentum wheel and is suitable for life prediction and analysis of high reliability, long life products.
作者
徐敬勃
谭学谦
吴珍
孙丹峰
姜宁翔
孙丹
XU Jingbo;TAN Xueqian;WU Zhen;SUN Danfeng;JIANG Ningxiang;SUN Dan(Shanghai Aerospace Control Technology Institute,Shanghai 201109;Shanghai Engineering Research Center of Inertia,Shanghai 201109)
出处
《空间科学学报》
CAS
CSCD
北大核心
2019年第3期388-398,共11页
Chinese Journal of Space Science
关键词
动量轮
维纳过程
退化模型
可靠性
寿命预测
Momentum wheel
Wiener process
Degradation modeling
Reliability
Life prediction
