基于 PMAC运动控制卡的切向跟随控制算法的实现

摘要

基于PMACclipper运动控制卡，提出任意二维轨迹的切向跟随插补算法。在xy平面二维坐标系中，实现刀具中心的轨迹运动控制；在旋转轴C坐标系中，根据xy坐标系中刀具的实时位置坐标，计算得到与之相切的切线方向的转角，控制刀刃始终与轨迹相切。此算法简单、高效，可充分利用运动控制卡的功能，适用于数控裁床等特殊数控设备的控制。%A tangent following interpolation algorithm was proposed based on PMACclipper motion controller for twodimensional curve. The center of the tool could move along the curve in the xy coordinate system. In the C coordinate system,the tangential angle was gotten by the realtime coordinates of the tool in the xy coordinate system,and the tool edge direction was controlled to tangent to the curve always. It is a simple,efficient algorithm which can make full use of the function of the PMAC. It is suitable for CNC cutting machine and other special NC equipments.