摘要
针对目前非均匀有理B样条曲线插补加减速控制方法的不足,提出了一种基于速度敏感区尖点的分段插补新方法.该方法根据NURBS曲线的几何特性,以速度敏感区尖点对NURBS曲线进行分段,并结合弓高误差限制和机床加减速能力采用S型加减速方法进行速度规划处理.在指定的NURBS曲线及参数环境下进行的仿真实验表明,新方法较自动调节进给速度插补方法最大弓高误差减小了76.7%,最大加速度减小了76.7%,最大加加速度减小了94.0%,验证了所提方法的可行性和有效性.
A novel segment interpolation algorithm based on feedrate sensitive corner＇s sharp points is proposed to address problems in the popular non-uniform rational B-spline （NURBS） acceleration-deceleration method （Acc/Dec）. In this new algorithm, NURBS curve is divided into small segments by sensitive corner＇s sharp points according to geometric charac- teristics, and a feedrate scheduling method based on S-shape Acc/Dec is proposed constrained by confined chord error and the machine＇s capability. In a designated NURBS curve and parameters environment, the simulation results show the effec- tiveness and feasibility of the new algorithm, in which maximum chord error and maximum Acc/Dec are reduced by 76.7%, maximum jerk is reduced by 94.0% compared with the adaptive feed speed interpolation algorithm.
出处
《信息与控制》
CSCD
北大核心
2013年第6期714-722,共9页
Information and Control
基金
福建省科技重大专项资助项目(2010HZ0002-1)
福建省省属高校专项项目(JK2013030)
福建省教育厅中青年教师教育科研重点项目(JA13210)
关键词
非均匀有理B样条
插补
速度敏感区
尖点
弓高误差
non-uniform rational B-spline
interpolation
feedrate sensitive comer
sharp point
chord error：oduction）
