一种精度可控制的有理曲线拟合算法  

AN ALGORITHM FOR RATIONAL CURVES FITTING WITH CONTROL ACCURACY

作　　者：齐树义 王以直[1] 寇纪淞[1] 王中胜[1] 

机构地区：[1]天津大学信息与控制研究所

出　　处：《天津大学学报》1992年第3期102-107,共6页Journal of Tianjin University(Science and Technology)

基　　金：国家优秀青年科学基金;天津市21世纪青年科学基金

摘　　要：根据测量不规则几何形状模具时误差的控制方法,提出了通过限制两型值点间拟合曲线段到两型值点间弦的最大距离来控制拟合精度的有理曲线拟合算法,并与Bezier曲线和参数三次Spline曲线进行了比较。According to the method of error control in measuring dies and moulds with non-geometric three-dimensional shapes, this paper presents an algorithm for rational curve fitting with control accuracy by limiting the maximum distance from the curve segment to the chord between two knots and comparese it with Bezier cubic curves and parametric cubic Spline curves.

关 键 词：有理曲线 控制精 拟合算法 CAD 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]