关键词: 支撑梁结构设计, 多目标优化集成, 面响应模型, 改进的非支配排序遗传算法

Abstract: To reduce the beam structure quality and mass/inertia of high-layer leather cutting machine,and to improve its structural rigidity,an integrated optimization design method that combined system modeling,structure simulation,response surface model with multi-objective optimization was proposed.By using orthogonal experiment,the response surface model for beam structure was constructed to obtain the approximate model.A multi-objective searching method based on Non-dominated Sorting Genetic Algorithm (NSGA-Ⅱ) was adopted to generate Pareto optimal solution sets.As evidenced in the simulation,the proposed method could effectively find design solutions for improving all the conflicting objectives,and had practical value for increasing dynamic performance and reducing energy consumption for high-speed leather cutting machine.

Key words: structure design, multi-objective integration optimization, response surface model, non-dominated sorting genetic algorithm Ⅱ