三次参数曲线的一种等参数增量插补方法

An Equal Parameter Increment Interpolation Method for Three-Rank Parameter Curve

通过对三次参数曲线 0 3阶差分的分析 ,导出了其插补递推公式 ,其中只包含加法运算 ,可以得到很高的插补速度。分析了受弓高误差和机床最大进给速度限制的参数增量的选取。

By analyzing the differences of three rank parameter curve from zero rank to three ranks, the interpolation successive formula is deduced. The formula only contains addition operation, so high interpolation speed can be gained.How to select the parameter increment restrained by bow height error and maximum feed speed has been analyzed,too.