摘要
机床数控系统根据插补结果发出位置控制指令对各坐标轴进行独立的位置闭环控制,驱动相应的机械传动机构,最终实现精确的轮廓进给运动。本文研究了各轴位置闭环控制特性对轮廓误差的影响,分析了两坐标轴进给运动控制系统圆弧运动时因伺服系统有限带宽引起的半径误差和运动轴性能不匹配引起的椭圆误差,并进行了仿真验证。
In CNC machine tool, precise contouring feeding movement with transmission machinery is carried out along interpolated position command. Each axis tracking error in the system is controlled independently. The contouring motion error affected by disfinguishing feature of each axis was studied. Two errors, the circular are radius error clue to the finite bandwidth of the servo system and the elliptic error due to performance mismatch between motion axes, were analyzed. Conclusions discussed were confirmed by simulation.
出处
《机床与液压》
北大核心
2007年第2期69-72,共4页
Machine Tool & Hydraulics
基金
南京工程学院科研基金资助(编号:KXJ06019)
