B样条曲线端点的一种处理方法及应用

A Processing Method and Application of Bspline Curve Endpoint

针对 Ｂ 样条曲线的起点不在相应的特征多边形的顶点上，给应用该曲线带来一定困难的问题，结合水泵叶轮的计算机辅助设计，提出一种处理 Ｂ样条曲线端点的方法，此法引入了调整参数，可以灵活地控制所控制曲线的形状，以满足机械工程计算机辅助设计的需要。

That the strong point of Bspline curve endpoint is not at the top point of relevant characteristic polygon results in some problems for the application of curve.Providing a method of processing Bspline curve endpoint in combination with CAD of pump impeller in the paper is for solving those problems.The adjusting parameters are included to control the curve shape to be controlled,and meet the requirements of CAD of mechanical engineering.