NURBS曲线实时插补进给速度规划技术研究  

Research of NURBS Curve Real-time Interpolation Feed Speed Planning

作　　者：赵静[1] 李丽[2,3] 王国勋[1] 

机构地区：[1]沈阳理工大学 [2]东北大学 [3]沈阳城市建设学院

出　　处：《工具技术》2015年第3期7-11,共5页Tool Engineering

基　　金：国家高技术研究发展计划(863计划)资助项目(SS2012AA041303)

摘　　要：为了解决NURBS实时插补进给速度规划过程中所存在的计算量大,实时性不高等问题,提出了离线进给速度规划方法。该方法在非实时周期内完成速度规划任务,并生成进给速度曲线。为了满足机床动力学约束,在规划过程中充分考虑了机床最大加速度和最大加加速度约束。仿真分析表明,该方法能够大幅减小实时插补周期的计算任务量,提高插补的实时性;同时,所规划的速度曲线满足机床动力学要求,具有良好的进给速度平滑效果,有利于提高插补精度。In order to solve the problem of large amount of calculation and real time not high in the process of NURBS real - time interpolation feed speed planning, offline feed speed planning method is proposed. The method plan speed in non real - time cycle, and generate the feed speed curve. In order to meet the machine tool dynamics constraint, the maxi- mum acceleration and the jerk constraints were considered fully in the planning process. The simulation analysis show that the proposed method can greatly reduce the amount of computing tasks in real - time interpolation cycle, and improve the real - time performance of interpolation ; At the same time, the speed curve of the planning satisfies the requirement of ma- chine tool dynamics, has the good effect of feeding speed smooth, helpful to improve the interpolation precision.

关 键 词：NURBS 直接插补 进给速度规划 速度曲线 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]