摘要
随着遗传工程的不断发展,受其启发建立的各类算法已经应用到各个设计领域。其中,基于达尔文的适者生存、优胜劣汰的生物进化机制,由模拟有性生物的繁殖进化过程演变而来的遗传算法,因其具有全局搜索能力、广泛的适用性等特点在气动设计方面应用的已经比较成熟。但是常规遗传算法在实际应用中也暴露出许多不足,主要就是未能准确反映出生物的双向进化以及变异与交叉化关系的不对等。针对遗传算法的这些问题,本文采用了一种单亲DNA算法,模拟单亲生物自然遗传繁衍机理,将其应用到翼型设计中。与遗传算法相比,全局搜索能力更强,收敛速度更快,优化效果更理想。
With the development of genetic engineering, many kinds of algorithms based on it have been applied to engineering design fields. Among those, genetic algorithms are based on Darwin＇s Naturalistic evolutionism of which the main idea is natural selection and survival of the fittest, and genetic algorithms simulate the evolutionary mechanism of sexual reproduction. Since Genetic algorithms have globally convergence and wide feasibility, they have been applied maturely to aerodynamic design. Whereas, in the practical use of genetic algorithms, there are problems such as they are incapable of representing the bidirectional evolution and the effects of mutation and cross are not equal. In order to solve the problems, in this paper, an asexual DNA （Deoxyribonucleic Acid） algorithm, which simulates the evolutionary mechanism of asexual reproduction, is applied to airfoil design. Compared with genetic algorithms, asexual DNA algorithm has faster globally convergence and better optimal effect.
出处
《空气动力学学报》
EI
CSCD
北大核心
2009年第3期335-339,共5页
Acta Aerodynamica Sinica
基金
国家自然科学基金资助项目(10502043)
西北工业大学翱翔之星计划资助
关键词
遗传算法
单亲DNA算法
翼型设计
genetic algorithms
asexual DNA algorithm
airfoil design
