四维可视化多目标寻优方法及其在T型滤波器设计中的应用英文.pdfVIP

第20 卷第20 期 系 统 仿 真 学 报© Vol. 20 No. 20 2008 年10 月 Journal of System Simulation Oct., 2008 4-D Visual Multi-objective Optimization Method and Its Engineering Application on T-filter 1 1 2 1 WU Jia-ju , WANG Wen-ting , Hidehiko SUGIMOTO , LI Yuan-ting (1. Nondestructive Test Key Laboratory of Ministry Education, Nanchang Hangkong University, Nanchang 330034, China; 2. Fukui University, Japan) Abstract: To solve the problem of multi-objective optimization such as limited searching scope, complicated computation, a 4-D visual method was proposed. Color is introduced th explicitly into conventional 3-D coordinate system as the 4 dimension. Three conventional coordinates stand for the variables, with colored points for the values of objective functions. Lines of the same color are then integrated into isographs to show the 4-D visual effects. Multi-Objective optimization is conducted based on the intersections. Optimization of an unsymmetrical passive low-pass T-filter used in inverter is presented to demonstrate the method in detail. Isographs of objective function distribution are visible in the enlarged optimization scope. As a result, stability of the optimum solution is significantly improved. It points o