基于FPGA的变周期精插补器设计  

Design of Interpolator with Variable Period Based On FPGA

作　　者：杨雪峰[1] 何均[1] 陈浩[1] 

机构地区：[1]南京航空航天大学金城学院

出　　处：《可编程控制器与工厂自动化（PLC FA）》2011年第11期100-102,共3页Programmable controller & Factory Automation(PLC & FA)

摘　　要：传统的运动控制系统通常采用时间分割法以固定的周期进行插补运算,必然会产生速度波动误差和插补余量。本文在FPGA中设计的变周期精插补器可以较好地解决这些问题。变周期插补器由粗插补模块和变周期插补模块组成,可以实现直线、圆弧插补。最后加工实验表明,所设计的插补器使加工的平稳性和精度得到提高。In the tradditional motion control, the velocity qunatizing errors and interpola- tion spareare unually generated by the operation of the time-dividing interpolation as the fixed period. Thepaper designs the interpolator based on the variable period to solve these problems. Theinterpolator is composed of two modules - the rough interpolation and variable periodinterpolation - to implement the interpolation for the line and arc. In terms of the designedinterpolator, the machining stability and precision is improved and tested in the final experiment.

关 键 词：变周期插补 FPGA 运动控制 数控 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]