参数化

The advantage of this measure is that the optimum rational reparameterization's parametric speed satisfies that the maximum deviation from unity is the minimum in this family.

利用该方法求得的最优参数化在曲线的重新参数化曲线族中，参数速度偏离单位速度的最大值达到最小。

This 3D model is allowed for the full coupling of the dynamics, microphysics, and electrical characteristics within the thunderstorm.

第三章主要介绍了模式的五种起电参数化方案和云内放电参数化方案，并对各种参数的选取进行了详细的叙述。

As the parameters are numerous in non-rigid registration model, the particle swarm optimization algorithm is selected to achieve exploration and exploitation in the whole feasible space accurately and fleetly for the unknown parameters of nonrigid transformation. Particle swarm optimization algorithm has the characteristic of fast global searching for the optimal, but it is restricted in applications by the inclination of its particles falling into premature convergence.

在非刚性图像配准的框架下，提出应用Wendland紧支径向基函数作为参数化的空间变换模型，并针对非刚性配准模型的未知参数量大的问题，提出应用全局化的粒子群优化算法对整个可行性空间进行快速而准确的探索和挖掘，以求得非刚性变形的未知参数。

By means of CADDS5 software, the virtual parametrization design of the structural model of jet pumps are carried out.

利用CADDS5软件的参数化设计方法，对射流泵结构模型参数实现参数化虚拟设计。

Based on the example of turbine reverse engineering , the general procedure that can be used to translate the physical object into CAD datum by Surfacer software is determined in this paper1 By going deep into the vector of point-cloud , it's parametrization can be gained by adopting the precept of accumulating chordal parametrization1 According to the principle of const ructing curve using the least square method , the high quality-curve can be gained by modifying curve's parameter1 This paper also empha2sizes on some methods about processing point-cloud , const ructing curve and const ructing surface1 And it can provide several methods to const ruct high quality2CAD model for mould machining1

此栏目为免费论文，可自行复制获取，如需要其他完整论文，可点击论文范文查找摘要本文就涡轮反求造型的实例，采用Surfacer 软件规划出由实物转化为工程CAD 资料的一般流程。在深入分析点云数据的矢量方向基础上，采用积累弦长参数化方案实现点云的参数化；根据最小二乘法曲线拟合原理，修改曲线参数获得高品质曲线；并重点论述了点云处理、曲线生成、建构曲面的方法，为模具加工提供了建构高品质CAD 模型的有效途径。

Combined with the design objects of the section and tendon curve in a prestressed concrete continual girder bridge, the establishment of parametric model and the redact of parametric drawing program are discussed. And the implementation of the three kinds of parameter-driven: variation-driven, table-driven and dimension-driven is put forward.

结合预应力连续梁桥中梁体截面和钢束曲线等设计对象的具体特点，讨论了参数化模型的建立和参数化绘图程序的编制方法，并提出了变量驱动、表驱动、尺寸驱动这三种参数驱动方式的具体实现。

Characteristics of parametric design and implementation approach for parametric database establishment based on redevelopment of Pro/program is expiated and an actual case is presented.

介绍了参数化设计的基本原理，阐述了Pro/E参数化设计的特性及基于Pro/program二次开发实现参数化建库的方法，并给出了实例。

To combine immediate modeling with sketch modeling, increased the level of parameterization about structural design of belt pulley.

通过直接造型与草图造型相结合，提高了皮带轮结构设计的参数化程度；通过设置开关参数增加了皮带轮三维模型模板的适用类型，为轮盘类零件的参数化结构设计提供了有益的探索途径。

By using the UG top down assembly modeling technology,and optimizing the design parameters of extrusion die for pipe products,the parameters SQL database of extrusion dies was established.Microsoft Visual Studio.net 2003 MFC was chosen as the development platform of the system,and an intelligent parametric design system of extrusion dies based on UG was designed,which can automatically generate 3D extrusion die assembly parts and graphics.

应用UG自顶向下的装配建模技术，对挤出模头进行参数化设计，建立智能挤出模头参数SQL数据库，采用Microsoft Visual Studio 。net 2003环境进行MFC编程，构建一个基于UG的管材挤出模头智能参数化设计系统，在UG中自动生成三维挤出模头零件和装配图。

To realize the parametrical design of pipe die for extrusion, a parametrical design language with friendly graphic user interface was combined with the APDL language (Ansys Parametric Design Language) provided by ANSYS software, and then the flow fields was analyzed.

本课题为机头设计提供了一种方法，即利用具有良好图形用户界面的参数化设计语言，结合ANSYS有限元软件自带的APDL（Ansys Parametric Design Language）语言，实现了芯棒式管材挤出机头流道的参数化设计，并利用ANSYS有限元分析软件对其流场进行模拟计算和分析，以获得较为适宜的机头几何参数。

So that more consumers can enjoy more delicious quality, technology is even better than wine.

让更多的消费者可以品尝到品质更为鲜美，工艺更为精湛的葡萄酒。

Open it in your favorite text editor .

在你最喜爱的文本编辑器中将它打开。