固体火箭技术2017，Vol.40Issue(2)：250-256,7.DOI:10.7673/j.issn.1006-2793.2017.02.021
基于序列近似优化算法的固体运载火箭弹道设计
Solid launch vehicles trajectory design based on sequential approximate optimization algorithm
彭科 1胡凡 1张为华1
作者信息
- 1. 国防科学技术大学航天科学与工程学院,长沙410073
- 折叠
摘要
Abstract
Solid launch vehicles trajectory optimization problem was researched using shooting method.Current shooting methods have shortcomings on the efficiency of intelligent optimization algorithms and constraints formulation.The sequential approximate optimization (SAO) algorithm was introduced to solve solid launch vehicles trajectory optimization problem.A high efficiency Gaussian kernel width determining method for radial basis function (RBF) used in SAO was proposed.Numerical experiments show that the proposed kernel width determining method improves the approximate accuracy of RBF remarkably and generates almost no excessive calculation cost.Flight program and trajectory optimization problem for solid launch vehicles were established.In order to reduce the difficulty of solving solid launch vehicles trajectory optimization problem,equality constraints in optimization problem were transformed into an inequality constraint ingeniously.Based on improved SAO algorithm,trajectory optimization for a launch vehicle was accomplished,and the global optimal solution was obtained after calculating original model 308 times.Propellant consumption of the upstage in optimization scheme is 25.7％ less than primary scheme.关键词
固体运载火箭/弹道优化/打靶法/序列近似优化/径向基函数/高斯核宽度Key words
solid launch vehicle/trajectory optimization/shooting method/sequential approximate optimization/radial basis function/Gaussian kernel width分类
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彭科,胡凡,张为华..基于序列近似优化算法的固体运载火箭弹道设计[J].固体火箭技术,2017,40(2):250-256,7.
