连续微线段柔性加减速自适应前瞻规划算法  

Self-Adaptation Look-Ahead Planning Algorithm Based onContinuous Micro Line Flexible Acceleration and Deceleration

作　　者：叶衡 谢明红[1] YE Heng;XIE Minghong(College of Mechanical Engineering and Automation,Huaqiao University,Xiamen 361021,China)

机构地区：[1]华侨大学机电及自动化学院,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2021年第1期1-8,共8页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金面上资助项目(51875218);华侨大学研究生科研创新基金资助项目(18013080038)。

摘　　要：针对目前数控加工代码大多是连续微线段的情况,提出一种新型的自适应前瞻规划算法.首先,采用简化的S曲线加减速减少计算时间,提高加工过程的平稳性,并采用二分法求解段内可达到的最高速度;然后,采用识别速度敏感点的方法分割前瞻区间,实现自适应动态规划,进一步优化前瞻区间的终点速度,提高加工效率;最后,通过模拟实验验证算法的可行性.结果表明:相较于传统规划算法与其他前瞻规划算法,文中前瞻规划算法可显著提高加工效率.In view of the fact that most numerical control machining codes are continuous micro lines,a new self-adaptation look-ahead planning algorithm was proposed.Firstly,the simplified S-curve acceleration and deceleration method was used to reduce the calculation time and improve the smoothness of the machining process,and the dichotomy method was used to solve the maximum speed that can be achieved in the segment.Then,the method of identifying speed sensitive points was used to segment the look-ahead interval to realize self-adaptation dynamic planning,which further optimized the terminal speed of the look-ahead interval and improved the processing efficiency.Finally,the feasibility of the algorithm was verified by simulation experiments.The results show that the proposed planning algorithm can significantly improve the machining efficiency compared with the traditional planning algorithm and other look-ahead planning algorithm.

关 键 词：微线段 前瞻算法 S曲线加减速 自适应 数控机床 高速加工 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]