星载天线展开机构可靠性的未确知分析法

Abstract

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

CLC Number:

TB114.3

References

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

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