Considerations of uncertainty in robust optimisation of electromagnetic devices
Song Xiao, Yinjiang Li, Mihai Dragos Rotaru, Jan K. Sykulski · International Journal of Applied Electromagnetics and Mechanics · 2014
Due to unavoidable uncertainties related to material properties and manufacturing processes, the robustness of the optimal solution must be considered when designing electromagnetic devices. In this paper, the worst-case optimisation (WCO) and the worst-vertex-based WCO are proposed to evaluate the robustness of both performance and constraints under uncertainty. To reduce computing times when searching for the robust solution a predicted objective function is used, obtained with the help of a kriging algorithm which explores the searching space using the concept of rewards. Finally, to avoid some of the shortcomings of WCO, the concept of average performance evaluation is developed.