Development and investigation of efficient GA/PSO-hybrid algorithm applicable to real-world design optimization

Shinkyu Jeong, Shoichi Hasegawa, Koji Shimoyama, Shigeru Obayashi

研究成果: Conference contribution

12 被引用数 (Scopus)

抄録

Genetic Algorithms (GAs) generally maintain diverse solutions of good quality in multi-objective problems while Particle Swarm Optimization (PSO) shows rapid convergence to the optimum solution. Previous studies indicated that search abilities can be improved by simply coupling these two algorithms; GA compensates for the low diversity of PSO while PSO compensates for the high computational costs of GA. In this study, the configurations of the two methods when used in a fully coupled hybrid algorithm were investigated to achieve an improvement in diversity and convergence simultaneously for application to real-world engineering design problems. The new hybrid algorithm was validated using standard test function problems, and it was demonstrated that the new hybrid algorithm showed better performance than the simply coupled hybrid algorithm, as well as both pure GA and pure PSO. Especially, the new hybrid algorithm shows robust search ability regardless of initial population selection. This feature is very important in real-world engineering design problems which do not allow multiple optimization runs to be implemented due to heavy computational costs. The new method was applied to optimization of a diesel engine combustion chamber to reduce exhaust emissions, such as NOx and soot. The results demonstrated the applicability of the present method to real-world design problems. In addition important geometry design variables controlling the emission performance were investigated to obtain useful knowledgeabout low emission diesel engine design.

本文言語English
ホスト出版物のタイトル2009 IEEE Congress on Evolutionary Computation, CEC 2009
ページ777-784
ページ数8
DOI
出版ステータスPublished - 2009 11 25
イベント2009 IEEE Congress on Evolutionary Computation, CEC 2009 - Trondheim, Norway
継続期間: 2009 5 182009 5 21

出版物シリーズ

名前2009 IEEE Congress on Evolutionary Computation, CEC 2009

Other

Other2009 IEEE Congress on Evolutionary Computation, CEC 2009
国/地域Norway
CityTrondheim
Period09/5/1809/5/21

ASJC Scopus subject areas

  • 人工知能
  • 計算理論と計算数学
  • 理論的コンピュータサイエンス

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