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A Perspective of Hierarchical Layout Design Optimization for Highly Packaged Equipments

[+] Author Affiliations
Kikuo Fujita, Masanori Kuriyama, Takashi Suyama

Osaka University, Suita, Osaka, Japan

Paper No. DETC2007-35189, pp. 15-27; 13 pages
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 6: 33rd Design Automation Conference, Parts A and B
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4807-8 | eISBN: 0-7918-3806-4
  • Copyright © 2007 by ASME


This paper discusses a perspective of hierarchical layout design optimization for highly packaged equipments and demonstrates an implementation of an optimization algorithm with a simplified case study. First, the Pareto optimality of subsystem-level shape design against the optimality of system-level shape design is extracted through two-level hierarchical formulation of layout design problems. Then, a computational design algorithm is developed for a class of two-dimensional layout design problems of rectangles, some of which are the results of similar problems defined in its sub-levels. The algorithm represents the layout topology with sequence-pair and the shape of each module or component with the aspect ratio, and optimizes them with genetic algorithms. The Pareto optimality of sub-levels is handled with the functionality of multi-objective optimization of genetic algorithms, in which a set of Pareto are simultaneously generated. Top-level and sub-level layout problems are coordinated through exchange of preferable ranges of shapes and layout. A case study is explored under the developed algorithm. The promises and limitations of the proposed framework is briefly discussed for defining the future works.

Copyright © 2007 by ASME
Topics: Design , Optimization



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