Sequential sampling refers to a set of experimental design methods where the next sample point is determined by information from previous experiments. This paper introduces a new sequential sampling method where optimization and user knowledge are used to guide the efficient choice of sample points. This method combines information from multiple sources of varying fidelity including actual physical experiments, computer simulation models of the product, and first principles involved in design and designer’s qualitative intuition about the design. Both quantitative and qualitative information from different sources are merged together to arrive at a new sampling strategy. This is accomplished by introducing the concept of a confidence function , which is represented as a field that is a function of the decision variables and the performance parameter . The advantages of the approach are demonstrated using different example cases. The examples include design of a bistable microelectro mechanical system switch, a complex and relevant mechanical system.
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March 2008
Research Papers
Q2S2: A New Methodology for Merging Quantitative and Qualitative Information in Experimental Design
Rahul Rai,
Rahul Rai
Automated Design Lab, Department of Mechanical Engineering,
e-mail: rahulrai@mail.utexas.edu
University of Texas at Austin
, Austin, TX 78712-0292
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Matthew Campbell
Matthew Campbell
Automated Design Lab, Department of Mechanical Engineering,
e-mail: mc1@mail.utexas.edu
University of Texas at Austin
, Austin, TX 78712-0292
Search for other works by this author on:
Rahul Rai
Automated Design Lab, Department of Mechanical Engineering,
University of Texas at Austin
, Austin, TX 78712-0292e-mail: rahulrai@mail.utexas.edu
Matthew Campbell
Automated Design Lab, Department of Mechanical Engineering,
University of Texas at Austin
, Austin, TX 78712-0292e-mail: mc1@mail.utexas.edu
J. Mech. Des. Mar 2008, 130(3): 031103 (12 pages)
Published Online: February 5, 2008
Article history
Received:
May 30, 2006
Revised:
October 10, 2007
Published:
February 5, 2008
Citation
Rai, R., and Campbell, M. (February 5, 2008). "Q2S2: A New Methodology for Merging Quantitative and Qualitative Information in Experimental Design." ASME. J. Mech. Des. March 2008; 130(3): 031103. https://doi.org/10.1115/1.2829884
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