고속열차 팬터그래프 팬헤드 형상의 강건최적설계

A robust design of panhead shape of pantograph is performed by using CFD analysis, Kriging model and genetic algorithm. In this paper, for the optimal performance and the robustness of the panhead shape, the drag coefficient and the change of lift coefficient about the angle of attack are minimized, respectively. In order to reduce the computing time and to ensure the global search of optimal point, Kriging-based genetic algorithm is used. Throughout this research, the optimized elliptic airfoil is robust to the uncertainty of wind condition and a fluctuating lift force is restricted. It also helps to reduce abrasion of catenaries and aero acoustic noises.