基于Pareto最优解的零件制作方向优化研究  

Part Building Orientation Optimization Based on Pareto Optimal Solutions

作　　者：刘厚才[1] 廖艳春[1] 

机构地区：[1]湖南科技大学机电工程学院,湖南湘潭411201

出　　处：《工程图学学报》2011年第1期157-162,共6页Journal of Engineering Graphics

基　　金：湖南省教育厅科研资助项目(09C397);湖南省自然科学基金重点资助项目(09JJ3093)

摘　　要：分析了快速成型工艺中零件制作方向对制件表面质量、所需支撑面积和零件制造时间的影响,分别建立了它们的优化数学模型。采用了基于Pareto最优解的多目标优化遗传算法NSGA-II进行优化计算,通过与单目标优化方法求得最优结果的对比,表明用多目标优化方法进行零件制作方向的优化计算,不仅可以求出比单目标方法更优的解,而且通过一次优化计算就可得到多个较优的零件制作方向。The effect of part building orientation on the part’s surface quality,the needed supporting area and building time is analyzed in the processing of rapid prototyping,and their optimizing models are established.The multi-objective optimizing generic algorithm of NSGA-II based on Pareto optimal solutions are used to seek the optimum solutions.Compared with the results gained by the single-objective optimizing way,it is shown that not only the better solution is gained but also many Pareto optimal solutions can be gained in one optimizing computing by NSGA-II.

关 键 词：计算机应用 快速成型 多目标优化 零件制作方向 PARETO最优解 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]