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RESEARCH PAPERS

Simplifying Iterations in Cross-Functional Design Decision Making

[+] Author and Article Information
V. Krishnan

The University of Texas at Austin, Austin, TX 78712

S. D. Eppinger

Massachusetts Institute of Technology, Cambridge, MA 02139

D. E. Whitney

MIT Center For Technology, Policy, and Industrial Development, Cambridge, MA

J. Mech. Des 119(4), 485-493 (Dec 01, 1997) (9 pages) doi:10.1115/1.2826394 History: Received January 01, 1996; Revised July 01, 1997; Online December 11, 2007

Abstract

In this paper, we consider the cross-functional design decision making process and discuss how sequential decision making leads to a degradation in design quality even when downstream design tasks are not rendered infeasible by preceding upstream decisions. We focus on the problem of simplifying the design iterations required to address this quality loss. Two properties, called sequence invariance and task invariance, are introduced to help reduce the complexity of subsequent design iterations. We also discuss how these properties may be used by designers in situations where mathematical descriptions of the design performance characteristics are unavailable. We illustrate the utility of these properties by showing their applicability to the design of catalytic converter diagnostic systems at a major U.S. automotive firm.

Copyright © 1997 by The American Society of Mechanical Engineers
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