B-SPLINE

作品数：246被引量：414H指数：10
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B-spline surface fitting and simplified GO/PO analysis of subreflector correction for large Cassegrain antenna distortion compensation被引量：3
《Research in Astronomy and Astrophysics》2018年第7期53-62,共10页You Ban Cong-Si Wang Shu-Fei Feng Wei Wang Bao-Yan Duan 
supported by the National 973 Program(No.2015CB857100);the National Natural Science Foundation of China(Grant Nos.51522507 and 51475349);Youth Science and Technology Star Project of Shaanxi Province(No.2016KJXX-06);the Natural Science Basic Research Plan in Shaanxi Province(No.2016JQ5072);the Fundamental Research Funds for the Central Universities;the Innovation Fund of Xidian University
The main surface of a large Cassegrain antenna consists of a large number of panels. There are inevitably random and systematic errors which will degrade the antenna pattern and limit its applicability when working at...
关键词：telescopes reflector antennas subreflector shaping COMPENSATION 
Shape optimization of axisymmetric solids with the finite cell method using a fixed grid被引量：2
《Acta Mechanica Sinica》2016年第3期510-524,共15页Liang Meng Wei-Hong Zhang Ji-Hong Zhu Zhao Xu Shou-Hu Cai 
supported by the National Natura Science Foundation of China (Grant 51275424);973 Program (Gran2011CB610304);Research Fund for the Doctoral Program of Higher Education of China (Grant 20126102130003);the opening project (Grant KFJJ13-6M) of the State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology)
In this work, a design procedure extending the B-spline based finite cell method into shape optimization is developed for axisymmetric solids involving the centrifugal force effect. We first replace the traditional co...
关键词：Finite cell method（FCM） Shape optimization B-spline Sensitivity analysis Axisymmetric solids 
TIME-OPTIMAL INTERPOLATION FOR CNC MACHINING ALONG CURVED TOOL PATHES WITH CONFINED CHORD ERROR被引量：4
《Journal of Systems Science & Complexity》2013年第5期836-870,共35页YUAN Chunming ZHANG Ke FAN Wei 
supported by a National Key Basic Research Project of China under Grant No.2011CB302400;the National Natural Science Foundation of China under Grant No.60821002
In this paper, two new interpolation algorithms lot CNC machining along curve^l tom pathes are proposed： a time-optimal interpolation algorithm under chord error, feedrate, and tangential acceleration bounds, and a g...
关键词：Chord error CNC interpolation cubic PH curve JERK quadratic B-spline time-optimalvelocity planning velocity limit curve. 
Vibrational transition spectra of H_2^+ in a strong magnetic field
《Chinese Physics B》2013年第9期353-357,共5页胡师林 史庭云 
Supported by the National Basic Research Program of China (Grant No. 2010CB832803)
Vibrational transition spectra of H2＋ in an ultra-strong magnetic field are determined. The validity of Born- Oppenheimer approximation is analyzed based on one-center method and B-spline basis sets. It is shown that...
关键词：B-spline basis one-center method Born-Oppenheimer approximation vibrational transition spectra 
Effect of electron correlation on high-order harmonic generation in helium model atom
《Chinese Physics B》2013年第1期171-174,共4页胡师林 史庭云 
Project supported by the National Natural Science Foundation of China (Grant No. 10974224);the National Basic Research Program of China (Grant No. 2010CB832803)
High-order harmonic generation （HHG） of a helium model atom in an intense laser field has been numerically investigated. The influence of electron correlation on HHG is analysed by changing the strength between the ...
关键词：electron correlation high-order harmonic generation B-SPLINE 
B-SPLINE PATCHES AND TRANSFINITE INTERPOLATION METHOD FOR PDE CONTROLLED SIMULATION被引量：1
《Journal of Systems Science & Complexity》2012年第2期348-361,共14页Yuanjie LIU Hongbo LI 
partially supported by NKBRSF under Grant No.2011CB302404;NSFC under Grant Nos. 10871195,10925105,60821002,and 50875027
This paper is to discuss an approach which combines B-spline patches and transfinite interpolation to establish a linear algebraic system for solving partial differential equations and modify the WEB-spline method dev...
关键词：B-spline representation finite element method RBF transfinite interpolation WEB-spline. 
Extended Cubic Uniform B-spline and α-B-spline被引量：21
《自动化学报》2008年第8期980-983,共4页XU Gang WANG Guo-Zhao 
Supported by National Natural Science Foundation of China （60773179） and the National Basic Research Program of China （973 program） （2004CB318000）
花键曲线和表面在 CAD 和计算机图形起一个重要作用。在这份报纸，我们建议立方的一致 B 花键的几延期。然后，我们在场插入内推的延期 -B-spline 基于新 B 花键和单个相配技术。延期的优点是他们有全球、本地的形状参数。而且，我们也...
关键词：计算机技术 CAD 图象处理技术 几何图形 
用迭代非均匀B-spline曲线(曲面)拟合给定点集被引量：20
《中国科学（E辑）》2003年第10期912-923,共12页蔺宏伟 王国瑾 董辰世 
国家自然科学基金(批准号:60173034);国家自然科学创新研究群体基金(60021201);国家重点基础研究"九七三"资助项目(2002CB312101)
基于盈亏修正的思想,提出迭代非均匀B-spline曲线曲面的算法,来解决目前计算机辅助设计和逆向工程中急需解决的一个关键问题:无需求解方程组得到拟合(插值)给定点集的曲线曲面。其基本思想是首先按给定的拟合点集作一条(张)初始的非均匀...
关键词：计算机辅助设计 CAD 迭代非均匀B-splinee曲线 迭代非均匀B-splinee曲面 逆向工程 插值 拟合 
B-spline对金属p-T曲线的拟合与实现
《四川师范大学学报（自然科学版）》2002年第4期390-393,共4页杨春 李艾 
国家 973重点项目基金资助项目
金属饱和蒸汽压与温度的关系在真空蒸发镀膜技术中具有重要的意义 ,尤其在工业生产自动控制过程中 .采用B Spline曲线方法对金、银、铝、镓等多种金属的p T曲线进行了绘制 ,论述了基本原理与算法实现过程 ,讨论了程序实现的关键技术与特...
关键词：B-SPLINE 真空蒸发镀膜 p-T曲线 算法 
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