面向曲线加工的精确加减速控制  

Accurate Acceleration/Deceleration Control for Curve Machining

作　　者：焦青松[1,2] 李迪[2] 王世勇[2] 

机构地区：[1]华南理工大学经济与贸易学院,广州510006 [2]华南理工大学机械与汽车工程学院,广州510640

出　　处：《机械科学与技术》2015年第5期733-736,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：863计划项目(2012AA040909);中央高校基本科研业务费项目(x2jmD2118150)资助

摘　　要：数控系统加工曲线轨迹的实质是以连续的直线段逼近曲线轨迹,所以加工轨迹的实际长度不等于曲线轨迹的理论长度。针对此问题,提出了一种利用二分法的基本思想求解加工轨迹的实际长度,从而实现精确加减速控制的算法。仿真结果表明:采用所提算法能够实现插补终点与曲线轨迹终点重合,并且能够实现理论加减速曲线与实际加减速曲线一致,从而有利于保证加工质量和机床的动态性能。In curve machining,the curve trajectory was approached by the continuous small straight line segments.Then,the theoretic trajectory length was not exactly equal to the actual machining length. Therefore,a new algorithm was proposed to solve the problem,which realized the accurate acceleration-deceleration control for the curve machining by adjusting the actual machining length via dichotomy. The simulation result of a practical example demonstrates that the present algorithm can make the interpolation terminal point match up to the curve trajectory terminal point and do the theoretic acceleration/deceleration velocity profile consist with the actual acceleration/deceleration velocity profile. The present algorithm can improve the machining precision of curve trajectory and ameliorate the dynamic performance.

关 键 词：加减速控制 曲线加工 二分法 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]