Optimization for composite wing based on Pareto genetic algorithm
-
摘要: 针对某型飞机设计过程中遇到的副翼反效问题,提出了复合材料机翼满足气动弹性要求的优 化方法,构造了一种基于Pareto最优解定义的多目标遗传算法——Pareto遗传算法.该算法 以权重信息为基础建立Pareto解集过滤器,引入小生境技术等实现Pareto前沿面的求解.测 试函数计算表明该算法有较好的收敛性.以复合材料机翼的升力系数和滚转力矩系数为目标 函数,采用Pareto遗传算法进行计算得出一组Pareto最优解集,计算结果表明,给出的方案 能够满足工程需求,为决策者提供了多种可选方案.Abstract: To solve the aileron reversal problem in aircraft design, an aero-elastic tailo ring optimization model of composite wing for engineering requirement was establ i shed and the Pareto genetic algorithm (PGA) based on Pareto optimal set was developed. In order to obtain the Pareto optimal set, the Pareto filtering pool was constructed based on weight information in PGA. And the niche techn ology was utilized to keep the diversity of population. The computation of the t e st function indicates that PGA has good convergence. In the numerical example, s etting the lifting coefficient and the rolling moment coefficient as objective f unctions, the expected Pareto optimal set was obtained by using PGA. The re sults show that the Pareto optimal set satisfies the engineering requirement and can provide many feasible projects for the decision-maker to choose.
-
Key words:
- Pareto optimal sets /
- genetic algorithm /
- multi-objecti ve optimization
-
[1] 徐玖平,李军．多目标决策的理论与方法[M]．北京:清华大学出版社,2005 Xu Jiuping, Li Jun. Multiple objective decision making theory and methods [M]. Beijing:Tsinghua University Press, 2005(in Chinese) [2] Deb K, Pratap A, Agarwal S, et al. A fast and elitist multiobject ive genetic algorithm:NSGA-II [J]. IEEE Transactions on Evolutionary Computa tion,2002, 6(2):182-197 [3] Zitzler E, Thiele L. Multi-objective evolutionary algorithms:a comparat ive case study and the strength pareto approach [J]. IEEE Transactions on Evol utionary Computation, 1999, 3(4):257-271 [4] 隋洪涛,陈红全,黄明恪．Pareto基因算法多目标翼型优化设计[J]．航空学报,2002,23(2):177-179 Sui Hongtao, Chen Hongquan, Huang Mingke. Multi-objective airfoil optimization using Pareto genetic algorithm [J]. Acta Aeronautica et Astronautica Sinica, 2 002, 23(2):177-179(in Chinese) [5] 杨青,邱菀华,汪亮．固体火箭发动机成本与性能双目标优化设计[J] ．北京航空航天大学学报,2005,31(5):574-577 Yang Qing, Qiu Wanhua, Wang Liang. Dual-objective optimization design for cost and performance of a solid rocket motor [J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(5):574-577(in Chinese) [6] Crossley W A. Genetic algorithm approaches for multiobjective design of rotor systems . AIAA-96-4025-CP,1996 [7] Murata T,Ishibuchi H, Tanaka H. Multi-objective genetic algorith m and its applications to flowshop scheduling [J]. Computers and Industrial En gineering, 1996, 30(4):957-968 -
点击查看大图
计量
- 文章访问数: 3811
- HTML全文浏览量: 215
- PDF下载量: 1058
- 被引次数: 0
下载:
