华南理工大学学报(自然科学版) ›› 2016, Vol. 44 ›› Issue (3): 23-28.doi: 10.3969/j.issn.1000-565X.2016.03.004

• 机械工程 • 上一篇    下一篇

基于多目标优化的数控实时任务参数选择方法

翟振坤 李迪   

  1. 华南理工大学 机械与汽车工程学院,广东 广州 510640
  • 收稿日期:2015-08-04 修回日期:2015-09-09 出版日期:2016-03-25 发布日期:2016-02-02
  • 通信作者: 翟振坤(1984-),男,博士生,主要从事嵌入式系统设计原理与方法论、基于形式化方法的控制系统设计等研究. E-mail:smartzhai@163.com
  • 作者简介:翟振坤(1984-),男,博士生,主要从事嵌入式系统设计原理与方法论、基于形式化方法的控制系统设计等研究.
  • 基金资助:
    国家科技支撑计划项目 (2015BAF20B01);国家自然科学基金资助项目 (61262013); 广东省科技计划项目(2012A010702004,2012A090100012)

Parameter Selection of CNC Real-Time Task on the Basis of Multi-Objective Optimization

ZHAI Zhen-kun LI Di   

  1. School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2015-08-04 Revised:2015-09-09 Online:2016-03-25 Published:2016-02-02
  • Contact: 翟振坤(1984-),男,博士生,主要从事嵌入式系统设计原理与方法论、基于形式化方法的控制系统设计等研究. E-mail:smartzhai@163.com
  • About author:翟振坤(1984-),男,博士生,主要从事嵌入式系统设计原理与方法论、基于形式化方法的控制系统设计等研究.
  • Supported by:
    Supported by the National Key Technology Research and Development Program of the Ministry of Science and Techno- logy of China (2015BAF20B01) ,the National Natural Science Foundation of China (61262013) and the Science and Technology Planning Project of Guangdong Province,China (2012A010702004,2012A090100012)

摘要: 针对协同设计模式下数控实时任务参数的选择问题,提出一种基于多目标优化的任务参数选择方法. 该方法依据实时任务模型、性能目标以及系统约束建立数控任务参
数选择问题的多目标优化模型. 对于优化模型的求解,提出一种具备协同进化算子与精英团队保留机制的扩展型非支配排序遗传算法,以实现在大规模决策空间下的快速搜索,使得数控系统整体性能目标最优. 最后,基于仿真实验分析总结了数控实时任务参数选择策略,通过对比传统任务参数选择方法证明了所提方法在实际应用中的优越性. !

关键词: 数控系统, 多目标优化, 实时控制, 进化计算

Abstract: In order to realize the parameter selection of CNC real-time task in collaborative design mode,a task pa- rameter selection method on the basis of multi-objective optimization is proposed.In this method,a multi-objective optimization model is established according to real-time task model,performance objective as well as system con- straint,and the model is solved by means of an extended non-dominated sorting genetic algorithm with co-evolution operator and elite team retention mechanism,thus the speed of searching optimal task parameters in large-scale de- cision space improves,which promotes the overall performance of CNC system to achieve the optimum.Finally,the parameter selection strategy of CNC real-time task is summarized according to simulation results and the superiority of the proposed method in practical application is proved through a comparison with the traditional task parameter selection approach.

Key words: numerical control systems, multi-objective optimization, real-time control, evolutionary computation