NURBS curve method Taylor's launch type of interpolation arithmetic

Abstract

The algorithm of NURBS interpolation was introduced,it is the key for NURBS curve interpolation that formula of Taylor development of first-order, derivation of two order in the interpolation cycle under the condition of certain interpolation increment only and interpolation speed, by changing the interpolation increments can achieve correction curve of interpolation. This paper introduces a method using DSP motion control card for NURBS curve interpolation methods, this method can not only shorten the interpolation time, also can be controlled by motion control card interrupt timer to adjust interpolation. The last example shows that, the interpolation algorithm not only meet the control requirements, but also meets the requirements of high speed and high precision interpolation.