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ROBUST DESIGN methodologies

ROBUST DESIGN methodologies consist in methods for evaluating the impact of identified sources of noise on designs.

New methodologies for Robust Design have been defined and integrated in the TITOSIM prototype. They enable the design engineer to specify tolerances on input factors, to encapsulate variation in component values, and also to specify target values of design performance that include variability, such as mean performance, variance of performance or more specific target distributions for performance values. Briefly, the TITOSIM methodologies are:
1.Stochastic responses (flexible definition of robust characteristics)
2.Stochastic emulators (efficient estimation of product and process variation in the presence of noise)
3.New robust design optimisation methods (Safe design and Minimax design)
4.Library of cost functions
5.Integration with VOC module

There is a strong link between the Robust Design, VOC and optimisation modules. The VOC module identifies the input factors, classified as pure factors (no noise), internal noise factors, external noise factors. The Robust Design modules allow stochastic emulators to be built, based on stochastic responses. These emulators provide fast, efficient estimates of product and process variation that can be used in the optimization module to search for robust design solutions. To the knowledge of the partners this is a unique feature in TITOSIM.

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