• CN:11-2187/TH
  • ISSN:0577-6686

›› 2004, Vol. 40 ›› Issue (12): 168-171.

• 论文 • 上一篇    下一篇

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椭圆加工作业中的四圆弧切比雪夫逼近

彭云柯   

  1. 广西工学院机械系
  • 发布日期:2004-12-15

CHEBYSHEV APPROXIMATING FOUR PIECES OF CIRCULAR ARC TO ELLIPSE IN MACHINING AND OPERATING

Peng Yunke   

  1. Department of Mechanical Engineering, Guangxi Insititute of Technology
  • Published:2004-12-15

摘要: 采用约束非线性切比雪夫逼近论,给出了一种用四段圆弧逼近椭圆的方法,可使最大逼近误差达到最小,从而提高了数控机床和机器人的椭圆加工作业的精度。并且提供了最佳半径的相当准确的近似计算公式,可作为最后结果使用,从而避免编程迭代。

关键词: 切比雪夫逼近, 四段圆弧, 椭圆

Abstract: According to nonlinear Chebyshev approximation theory subject to constrains a computational method approximation four pieces of circular arc to ellipse is presented. By the method the maximum approximate error is decreased to the minimum. Therefore the accuracy in machining and operation of numerical control machine tools and robots is improved. Several approximate formulae that are quite accu-rate are also presented and can be taken as the formulae of the optimal radii thus the programming and iteration are avoided.

Key words: Chebyshev approximation, Ellipse, Four pieces of circular arc

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