期刊论文

Qiu, X.

中文

核技术

0253-3219

2022

45

5

65-75

10.11889/j.0253-3219.2022.hjs.45.050601

本校为第一机构

由于运载重量和成本的限制,空间核动力系统的质量是一个关键参数。辐射屏蔽系统是空间核动力系统自重的主要贡献之一。因此,有必要研究空间核动力系统质量最小化的屏蔽优化问题。为了实现空间堆辐射屏蔽快速设计与智能优化,基于精英策略的快速非支配遗传算法(Non Dominated Sorting Genetic Algorithm-II,NSGA-Ⅱ)与反向传播(Back Propagation,BP)神经网络算法相结合的智能优化方法,对Topaz-II空间堆辐射屏蔽进行优化,将屏蔽层的总质量与剂量率作为优化目标,得到辐射屏蔽方案Pareto最优解集。同时,为了实现屏蔽方案自动化选择,将NSGA-II得到的Pareto解集作为BP神经网络算法的数据库对数据进行分...

Background: The mass of a space nuclear power system is a critical parameter due to limitation of loading and high cost of transportation. The radiation shielding system is one of the main contributions of the self-weight of the space nuclear power system. Purpose: This study aims at the shielding optimization problem for the mass minimization of space nuclear power system. Methods: Firstly, the calculation model for the Topaz-II space stack was established and the shielding material was selected. Secondly, a masked multi-objective optimization...