星载天线展开机构可靠性的未确知分析法

J4 ›› 2009, Vol. 36 ›› Issue (5): 909-915.

星载天线展开机构可靠性的未确知分析法

朱增青;陈建军;刘国梁;宋宗凤

(西安电子科技大学机电工程学院，陕西西安 710071)

收稿日期:2008-06-23 出版日期:2009-10-20 发布日期:2009-11-30
通讯作者: 朱增青
基金资助:
国家863项目资助(2006AA04Z402);国家部委预研项目资助(Y13406040101)

Reliability analysis for the deployment mechanism of a large satellite antenna based on unascertained information

ZHU Zeng-qing;CHEN Jian-jun;LIU Guo-liang;SONG Zong-feng

(School of Mechano-electronic Engineering, Xidian Univ., Xi'an 710071， China)

Received:2008-06-23 Online:2009-10-20 Published:2009-11-30
Contact: ZHU Zeng-qing

摘要/Abstract

摘要：

对某周边桁架式大型星载天线的展开运动机理进行了研究，建立了展开机构的力学分析和未确知运动可靠性的分析模型．综合考虑尺寸误差和太空环境因素的影响，将运动功能函数视为未确知变量函数，利用未确知有理数计算的法则推导出可靠性计算公式，对机构在整个展开过程中的运动可靠性进行了预测．与成熟的随机方法想比，该方法简单易行，且能在缺乏足够数据或信息不完整的情况下，获得更安全、可信度更高的机构可靠性计算结果．用算例给出了未确知性天线展开机构功能函数的可能值及其可信度的计算结果，表明该方法的合理性和可行性．

关键词: 天线, 展开机构, 未确知有理数, 可靠性

Abstract:

The deployment principium of a large hoop-truss satellite antenna is studied and the mechanical analytical model and the unascertained reliability model of its deployment mechanism are presented. Synthetically considering the effect of dimension errors and the space environment factors, we treat the mechanism movement as a function of some unascertained rational numbers, and derive the reliability formula by using the computational theorem of unascertained rational numbers. The movement reliability of the mechanism of a large satellite antenna in the whole spreading process is predicted. Compared to the mature random method, the proposed method can obtain reliability result of safer and higher faith degree in the case of inadequate data or insufficient information; moreover, it is simple and easy to apply. Finally the possible values and faith degrees of the performance function of the unascertained antenna deployment mechanism are obtained by an example, which illustrates the rationality and feasibility of the presented method.

Key words: antennas, mechanisms, unascertained rational numbers, reliability

中图分类号:

TB114.3

朱增青;陈建军;刘国梁;宋宗凤. 星载天线展开机构可靠性的未确知分析法[J]. J4, 2009, 36(5): 909-915.

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