摘要
结合空间索杆铰接式伸展臂的应用环境,在分析空间索杆铰接式伸展臂组成和展开原理的基础上,建立以伸展臂展开失效为顶事件的故障树,分别对其进行定性及定量分析,获得各底事件的失效概率、概率重要度和关键度结果,确定引起伸展臂展开失效的主要因素.结果表明驱动力不足、角点滚轮卡死、精度失效是影响伸展臂正常展开的主要因素,据此提出了相应的改进措施,为空间索杆铰接式伸展臂的展开可靠性分析提供了依据.
Under the application environment of the space cable-strut deployable articulated mast, the fault tree of the deployable mast is established by considering the deploying failure of the mast as the top event based on the analysis of its composition and deployment mechanism, whose quantitative and qualitative analysis is finished for the fault tree of the deployable mast. And then the results of the probability of failure, important degree of probability and criticality are obtained and the main factors leading to the deploying failure of the mast are found. The results show that a correct deploying of the mast is influenced by lack of driving force, jamming on its roller card of the corner wheel and precision failure, which provides the foundation for the deploying reliability analysis of the space cable-strut deployable articulated mast.
出处
《空间科学学报》
CAS
CSCD
北大核心
2012年第4期598-604,共7页
Chinese Journal of Space Science
基金
国家自然科学基金重点项目(50935002)
国家自然科学基金项目(51006134)
2011浙江省重点科技创新团队(2010R50005)
2011年度省级公益性技术应用研究计划项目(2011C31G2060082)
2010年度省级公益性技术应用研究计划项目(2010C31076)
浙江省自然科学基金项目(Y1100777)共同资助
关键词
空间索杆铰接式伸展臂
故障树分析
展开可靠性
重要度分析
Space cable-strut deployable articulated mast, Fault tree analysis,Deployment reliability, Importance analysis
