Reentry trajectory optimization for hypersonic vehicles using fuzzy satisfactory goal programming method

被引：5

作者：

Hu C.-F. ^{[1
]}

Xin Y. ^{[1
]}

机构：

[1] School of Electrical Engineering and Automation, Tianjin University, Tianjin

来源：

International Journal of Automation and Computing | 2015年 / 12卷 / 02期

关键词：

direct collocation method; fuzzy satisfactory method; goal programming; multi-objective optimization; Reentry trajectory optimization;

D O I：

10.1007/s11633-014-0823-4

中图分类号：

学科分类号：

摘要：

Constrained reentry trajectory optimization for hypersonic vehicles is a challenging job. In particular, this problem becomes more difficult when several objectives with preemptive priorities are expected for different purposes. In this paper, a fuzzy satisfactory goal programming method is proposed to solve the multi-objective reentry trajectory optimization problem. Firstly, direct collocation approach is used to discretize the reentry trajectory optimal-control problem with nonlinear constraints into nonlinear multiobjective programming problem with preemptive priorities, where attack angles and bank angles at nodes and collocation nodes are selected as control variables. Secondly, the preemptive priorities are transformed into the relaxed order of satisfactory degrees according to the principle that the objective with higher priority has higher satisfactory degree. Then the fuzzy satisfactory goal programming model is proposed. The balance between optimization and priorities is realized by regulating parameter λ, such that the satisfactory reentry trajectory can be acquired. The simulation demonstrates that the proposed method is effective for the multi-objective reentry trajectory optimization of hypersonic vehicles. © 2015, Institute of Automation, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg.

引用

页码：171 / 181

页数：10

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