실험계획법과 콤플렉스법에 의한 고성능 유압휴즈의 최적 설계

A quick-acting hydraulic fuse, which is mainly composed of a poppet, a seat, and a spring, must be designed to minimize the leaked oil volume during fuse operation on a line rupture. The optimal design parameters of a quick-acting hydraulic fuse were searched using the design of experiments method and the complex method. First, the L 50 (5 4 ) orthogonal array is used to find the robust minimum point among the 625 points of design variables. The serach range can then be narrowed around the robust minimum point. Second, the L 50 (5 4 ) orthogonal array is used to obtain the variations of the design variables in the narrowed search range. The variations of design variables are used to set the structure of a polynomial equation representing the leakage oil volume of the quick-acting hydraulic fuse. The least squares method is then applied to obtain the coefficients of polynomial equation. Finally, the complex method is used to find the optimal design parameters where the objective function is described by the polynomial equation.