Sensitivity Analysis in Perceptual Evaluation of System Module Concepts
Selecting optimum concepts for a system and its subsystems in the conceptual design stage involves uncertainties due to imperfect information about customer preferences (market shares), cost of the system developed from each concept, and feasibility of new technology used in the new system. When analytical relationships between system performance and system inputs or parameters are unknown in the early system development stage, one approach to quantify the goodness of a concept is to use rating scales. This paper studies the effects of variations (precisions) in rating scales and in cost estimation for evaluating the goodness of system module concepts (e.g., sub-systems, assemblies, subassemblies, and parts). This paper presents a global sensitivity analysis (GSA) in perceptual concept evaluation, three probability measures for evaluating and selecting optimum concepts in GSA, and one-set-of-factors-at-a-time GSA to identify the sets of factors that cause significant variations in concept evaluation outcomes.
S. Takai and K. Ishii, "Sensitivity Analysis in Perceptual Evaluation of System Module Concepts," Proceedings of the ASME 2007 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (2007, Las Vegas, NV), American Society of Mechanical Engineers (ASME), Sep 2007.
ASME 2007 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, IDETC2007 (2007: Sep. 4-7, Las Vegas, NV)
Mechanical and Aerospace Engineering
Keywords and Phrases
Concept Selection; Global Sensitivity Analysis; QFD; Rating Scales; Quality function deployment
Article - Conference proceedings
© 2007 American Society of Mechanical Engineers (ASME), All rights reserved.
07 Sep 2007