Support vector machine for curve approximation 一種基于支持向量機的曲線逼近方法
Interval polynomial curves approximation of offset curves 曲線的光順
Secondly , based on nurbs curves approximation algorithm , a nurbs surface approximation algorithm on discrete data sets is given . thirdly , a shape - preserving parametric surface interpolation to data set is given 2基于所給的nurbs曲線的逼近算法,建立了帶插值條件的離散點集的nurbs曲面的逼近算法。
( 2 ) offset approximation for bezier curves the problem of parametric speed approximation of a curve is raised . the author points out that the crux of offset curve approximation lies in the approximation of parametric speed ( 2 )等距曲線逼近( offset )提出了曲線參數(shù)速度逼近問題,指出等距曲線逼近問題的關鍵在于參數(shù)速度的逼近
The nurbs curves and surfaces approximation to constrained data sets is discussed in this dissertation . the major works are as follows : firstly , based on simulated annealing algorithm and least square principle , a nurbs curves approximation algorithm to constrained discrete data sets is presented 本文討論了帶約束的離散點集的nurbs曲線、曲面的逼近問題,主要工作如下: 1基于模擬退火算法和最小二乘法,給出了帶插值條件的離散點集的nurbs曲線逼近的算法。
In addition , it had founded the database and universal post processing in the software for facilitating user to operate . the cam - designed cad / cam system software can design conventional types of cam , own the advanced curves approximation and complete function , so it should has great practical and theoretical value 本篇論文從設計的原理、設計的方法和設計的步驟等方面詳細闡述了對各類凸輪的設計過程,并從軟件的整體設計和各組成模塊設計等方面說明了軟件的實現(xiàn)方法,同時通過軟件的使用和操作一章來讓用戶對軟件的操作更加明確。
The dissertation proposes originally the idea of decomposing the time - variant load to solve this problem . first , the time - variant load is decomposed into the time - variant load characteristic and the time - variant load model due to the modeling method . second , the multi - curve approximation method is proposed to identify the load parameters , which to a great extent , reduces the effects on the time - variation of the load model from modeling method 針對負荷的時變性,論文首次提出了將負荷時變性分解的思想,首先將負荷的時變性分解為負荷特性的時變性和由建模方法引起的負荷模型的時變性,然后提出了多曲線擬合參數(shù)辨識方法,很大程度上消除了建模方法引起的負荷模型的時變性。