Weighting coefficients are used in analytical target cascading (ATC) at each element of the hierarchy to express the relative importance of (a) matching targets passed from the parent element and (b) maintaining consistency of linking variables and consistency with designs achieved by subsystem child elements. Proper selection of weight values is crucial when the top-level targets are unattainable, for example when “stretch” targets are used. In this case, strict design consistency cannot be achieved with finite weights; however, it is possible to achieve arbitrarily small inconsistencies. This article presents an iterative method for finding weighting coefficients that achieve solutions within user-specified inconsistency tolerances and demonstrates its effectiveness with several examples. The method also led to reduced computational time in the demonstration examples.
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March 2005
Article
An Efficient Weighting Update Method to Achieve Acceptable Consistency Deviation in Analytical Target Cascading
Jeremy J. Michalek,
e-mail: michalek@umich.edu
Jeremy J. Michalek
Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109-2125
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Panos Y. Papalambros
Panos Y. Papalambros
Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109-2125
Search for other works by this author on:
Jeremy J. Michalek
Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109-2125
e-mail: michalek@umich.edu
Panos Y. Papalambros
Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109-2125
Contributed by the Design and Automation Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received October 16, 2003; revised June 9, 2004. Associate Editor: W. Chen.
J. Mech. Des. Mar 2005, 127(2): 206-214 (9 pages)
Published Online: March 25, 2005
Article history
Received:
October 16, 2003
Revised:
June 9, 2004
Online:
March 25, 2005
Citation
Michalek, J. J., and Papalambros, P. Y. (March 25, 2005). "An Efficient Weighting Update Method to Achieve Acceptable Consistency Deviation in Analytical Target Cascading ." ASME. J. Mech. Des. March 2005; 127(2): 206–214. https://doi.org/10.1115/1.1830046
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