Comparison of Different Uses of Metamodels for Robust Design Optimization
2013 (English)Conference paper (Other academic)
This paper compares different approaches for using kriging metamodels for robust design optimization, with the aim of improving the knowledge of the performance of the approaches. A popular approach is to first fit a metamodel to the original model and then perform the robust design optimization on the metamodel. However, it is also possible to create metamodels during the optimization. Additionally, the metamodel need not necessarily reanimate the original model; it may also model the mean value, variance or the actual objective function. The comparisons are made with two analytical functions and a dynamic simulation model of an aircraft system as an engineering application. In the comparisons, it is seen that creating a global metamodel before the optimization begins slightly outperforms the other approaches that involve metamodels.
Place, publisher, year, edition, pages
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-84848OAI: oai:DiVA.org:liu-84848DiVA: diva2:562473
51st AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition 7 - 10 January 2013, Texas, USA