Implementation of an adaptive feed speed 3D NURBS interpolation algorithm

被引：3
|
作者：
Liang H.-B. [1 ,2 ]
Wang Y.-Z. [3 ]
Li X. [1 ]
机构：
[1] College of Mechanical and Electrical Engineering, Harbin Engineering University
[2] College of Mechanical Engineering and Automation, University of Science and Technology, Liaoning
[3] Department of Mechanical Engineering and Automation, Harbin Institute of Technology
来源：
Frontiers of Mechanical Engineering in China | 2006年 / 1卷 / 4期
关键词：
CNC (computer numerical control); Error; Interpolation algorithm; NURBS (non-uniform rational B-spline);
D O I：
10.1007/s11465-006-0047-6
中图分类号：
学科分类号：
摘要：
NURBS (non-uniform rational B-spline) interpolation algorithms have been provided in modern CNC (computer numerical control) systems. However, most of them focus on a constant feed speed without considering the contour accuracy. In order to deal with this problem, an adaptive feed speed interpolation algorithm for 3D NURBS parametric curves with confined chord errors is proposed. When the instantaneous radius of the curvature is small enough, the proposed interpolation algorithm automatically reduces the feed speed to meet the specified chord error. In the other situation it uses the second-order Taylor's expansions approximation interpolation algorithm to obtain a constant feed speed so that the contour accuracy in the CNC system is guaranteed. Experimental results were provided to verify the feasibility and precision of the proposed interpolation algorithm. © Higher Education Press 2006.
引用
收藏
页码：403 / 408
页数：5
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