| 1. | Realization of smooth connection of bicubic b 233 ; zier surface patches
曲面片光滑拼接的实现 |
| 2. | The results of analysis show that the workspace of parallel machine tools is enveloped by many surface patches
分析计算结果表明，并联机床的工作空间是由多张曲面片包围而成的闭包。 |
| 3. | The boundary curves correspond to a set of rectangular or triangular topological type that can be represented with tensor - product or degenerate b - spline surface patches
其中边界曲线对应于可用于张量积b样条曲面的具有矩形结构的曲线集合。 |
| 4. | The tool path can be adapted according to the shape of surfaces meanwhile the break , gap and overlap between adjacent surface patches are eliminated
该算法将加工曲面离散成三角化模型，在三角化模型中直接生成无干涉刀位轨迹，刀轨生成与刀轨干涉处理统一在一个演算法中。 |
| 5. | In order to realize 3d garment intelligent design , this paper brings forward a method to set up 3d garment model with form - points controlled spline and bi - cubic surface patch
摘要为了实现三维服装款式智能设计，提出以形值点控制的样条曲线和双三次曲面构建服装立体模型的方法。 |
| 6. | The algorithm of construction of a fractal interpolation surface patch based on rectangular patch is presented in the modeling , the construction algorithms of osteons and volkmann canals are designed , and the distribution of volkmann canals , the size and structure of osteons can be regulated and controlled according to different area , so it can satisfy the needs of the internal microstructure model
在建模中，提出了矩形平面片生成分形插值曲面片的算法，完成了骨单位、浮克曼管的构造算法，并实现了根据不同区域对浮克曼管的分布、骨单位的大小、结构等特征进行灵活调控，以满足内部微细结构模型的要求。 |
| 7. | The quadrilateral mesh and a special kind of linear basis function is selected on the rooftop so that the treatment of the attachment of the wire antenna to the surface patch is easier than other methods reported in literatures . using the proposed method , the analyses and prediction of electro - magnetic compatibility of the electrically small conducting structure are achieved , which provides a theoretical guidance in the system level design
在使用矩量法的过程中，山于在金属物体表面运用四边形面元进行剖分，并在面元上选择了一种特殊的线性基函数，园时在细天线和面元的连接处使用了改进了的方法，使得在处理细天线与面元电流相连接的部分较之以往文献提到的方法更为简单。 |
| 8. | A novel surface reconstruction algorithm is put forward . it can join the reconstructed surface patches along their co - edges and at their confluent point c2 - continuosly and seamlessly , so can guarantee the whole surface is c2 - continuous everywhere . the problem of surface interrogation and surface fairing has been studied
在现有方法的基础上,着重研究了相邻曲面片边界及交汇点处的连续性问题,提出了一种混合处理方法,解决了现有重建方法存在的相邻曲面片在边界及交汇点处难以达到c2连续的问题。 |
| 9. | In this technology , a theory which can be used to divide the tbs ' s base surface patch into triangle patches or unite several tbs ' s base surface patches into one triangle is presented , and some problems concerned with dividing the base surface patch into triangle patches are studied and solved such as cracks between triangle patches , computing the number of segmenting of the edge at base surface patch , computing the dividing number of the base surface patch , generating the triangle patches etc . how to combine several tbs ' s base surface patches into one triangle is also studied and solved
提出了按照给定的stl模型精度对tbs模型基本曲面片进行三角形平面片分割与合并的理论与算法。研究并解决了对基本曲面片进行三角形平面片分割时平面片之间的裂缝问题、基本曲面片边界分割次数、基本曲面片分割次数、三角形平面片生成等关键问题，以及基本曲面片合并问题。 |
| 10. | The projection and section curve graphs of workspace boundary surfaces for 6 - sps type pmts are drawn . results of analysis show that the theoretic workspace of 6 - sps trpe pmts is enveloped by 30 surface patchs . input and output ewtons of displacement analysis for double - octahedron variable geometry miss pmts are established , analytical expressions for determining singuledty configuration are derived
分别推导出了znys ztps型、 ips 3tps型和ipt ztps型并联机床奇异仓形判别的解析表达式，得到了奇异曲面方程，并由边界曲面分析方法得到了lps 3tps型和ipt ztps型并联机床的工作空间，文中给出了以上混联结构并联机床奇异位形与工作空间分析的数值实例。 |
