B样条曲线的奇点控制

本文探讨三次参数曲线和Ｂ样条曲线奇点产生的机理，阐明多边形基元所确定的曲线形状，为奇点控制提供直观而方便的方法，分析运动机构奇异情发生的位置与终端效应系数的关系，为在机构设计中防止产生奇异提供依据。

Analysis and Control of Singular Point in B-Spline Curve

An analysis is made on the mechanism of the occurrence of singular point in cubic parametric curve and B-spline curve; and on the curve shape determined by polygonal basic elements. The analysis is also made on the relation between the position .where singularity occurs in a motion mechanism and the coefficient of end effect. Based on these analyses,the author presents a directly perceived and convenient method for controlling singlar point; and provides a basis for preventing the occurrence of singularity in the design of constrained mechanical system.