一种插补前连续微小线段平滑过渡前瞻算法

A look-ahead algorithm for smooth transition of continuous micro line segments before interpolation

针对数控系统中连续微小线段的加工,提出一种前瞻的方法。结合段间圆弧过渡,简化S加减速,双向前瞻缓冲,实现各段起点速度、刹车速度和终点速度的计算,从而达到段间速度平滑过渡。实验结果表明,该方法具有计算量小、处理速度快、速度变换柔和等优点,可以满足数控系统实时快速的控制需求。

A look-ahead approach was presented for the machining of continuous micro line segments in NC system.Combined with the arc transition between segments,the S-curve acceleration and deceleration was simplified together with the two-way look-ahead buffering,so as to compute the starting velocity,braking velocity and terminal velocity for each segment,and then achieve a smooth transition between segments.Experimental results show that the method has such advantages as a small calculation amount,fast processing speed and soft speed transformation,which can meet the demands of real-time and fast control requirements of the numerical control(NC) system.