Including Imprecision in Engineering Design Calculations

William A. Law and Erik K. Antonsson

Proceedins of the ASME Design Theory and Methodology Conference DTM'94
(Sept. 1994), Volume DE-68, ASME, pages 109-114.


The Imprecise Design Tool (IDT) presented in this paper is a working computer implementation of the method of imprecision, a formal theory that represents preferences among design alternatives. An aircraft engine design example indicates how the IDT may be applied to support engineering design decisions, using the Engine Development Cost Estimator provided by General Electric Aircraft Engines, Cincinnati, Ohio.