航天器工程
航天器工程
항천기공정
SPACECRAFT ENGINEERING
2012年
2期
73-78
,共6页
交会对接%概率风险评价%可靠性评估
交會對接%概率風險評價%可靠性評估
교회대접%개솔풍험평개%가고성평고
rendezvous and docking%probabilistic risk assessment%reliability assessment
为有效评估交会对接任务过程的可靠性指标,提出了基于概率风险评价(PRA)的交会对接任务可靠性评估方法,该方法是通过事件树描述各事件或功能的可靠性与任务可靠性之间的关系,同时通过概率风险模型描述事件或功能的可靠性与设备可靠性之间的关系。根据我国航天领域可靠性工作现状,提出了交会对接过程可靠性评估的工程流程。
為有效評估交會對接任務過程的可靠性指標,提齣瞭基于概率風險評價(PRA)的交會對接任務可靠性評估方法,該方法是通過事件樹描述各事件或功能的可靠性與任務可靠性之間的關繫,同時通過概率風險模型描述事件或功能的可靠性與設備可靠性之間的關繫。根據我國航天領域可靠性工作現狀,提齣瞭交會對接過程可靠性評估的工程流程。
위유효평고교회대접임무과정적가고성지표,제출료기우개솔풍험평개(PRA)적교회대접임무가고성평고방법,해방법시통과사건수묘술각사건혹공능적가고성여임무가고성지간적관계,동시통과개솔풍험모형묘술사건혹공능적가고성여설비가고성지간적관계。근거아국항천영역가고성공작현상,제출료교회대접과정가고성평고적공정류정。
Based on probabilistic risk assessment(PRA) model,a reliability assessment approach is proposed to solve the quantitative assessment of rendezvous and docking mission.In this approach,event tree analysis(ETA) is used to describe the relation between base events(or functions) reliability and the whole mission reliability,and PRA model is used to describe the relation between equipment reliability and a base event(or function)reliability.According to the Chinese practical situation,a reliability assessment application diagram of space rendezvous and docking processes is presented.