The method of imprecision is a design method whereby a multi-objective design problem is resolved by maximizing the overall degree of designer preference: values are iteratively selected based on combining the degree of preference placed on them. Consider, however, design problems that exhibit multiple uncertainty forms (noise). In addition to degrees of preference (imprecision) there are probabilistic uncertainties caused by, for example, measuring and fabrication limitations. There are also parameters that can take on any value possible within a specified range, such as a manufacturing or tuning adjustment. Finally, there may be parameters which must necessarily satisfly all values within the range over which they vary, such as a horsepower requirement over a motor's different speeds. This paper defines a "best" set of design parameters for design problems with such multiple uncertainty forms and requirements. © 1994 Springer-Verlag London Limited.
- Engineering design