参数化

Secondly, the key technology of how to align point cloud with surface feature model of human body, analyze error, adjust position are researched and the algorithms of calculating center of mass, inertia axis, and symmetry plane are successfully introduced.

然后，研究了对齐后的模型，如何将点云投影到曲面，识别出曲面特征，并对点云进行参数化和采用基于约束及能量优化法算法进行曲面重构，快速的建立不同人体的光滑G~1连续的B样条参数曲面模型。

By the function of the dialog box in Auto CAD R12,this paper discusses the method of program design in which the parameter input of graphical interface can be carried out in parameter draft software.

本文论述了利用Auto CAD R12的对话框功能。在参数化绘图软件中实现图形界面的参数输入程序设计技术

Based on the entity intersection sorting algorithm, the function of semiautomatically generatingthe die assembly graphics parts graphics is realized; And the rectangular and circularwindows clipping and overlaying, the Boolean operation of 2D closed graphics and localenlarging tools is developed, producing an initial appraticable die CAD system.

按照工厂要求，开发的冲裁模CAD系统应当具备以下功能：具有良好的用户界面，实现在层SOLID上线型为CONTINOUS的IJNE，ARC，CIRCDe，toLYLINE组合图形实体中自动追踪出链式图形，求出包络矩形参数，进而实现模具系列零件参数化图形生成和自动尺寸标注，最后通过覆盖剪裁装配消隐生成模具装配图。

It seems natural to use this idea into the parameterization of the blending surfaces of three pipe surfaces, however, the blending surface of three pipe surfaces is very complicated and the inappropriate choice of parameters can lead to singular blending surface.

将这一思想应用于三管拼接曲面的参数化是自然的，但是由于三向管道曲面的拼接曲面是是复杂的，并且由于参数选取不当可能出现三个管道曲面分别拼接于混合拼接曲面的不同分支等奇异情况，从而这一思想的实现具有现实难度。

Because of the superfluous parameters in the model, it is unnecessary to get the exact priori knowledge concerning the stmcture and dead time of system. This property is not only convenient for modeling, but also useful for enhancing the accuracy and robustness of predictive model.

由于参数化模型有冗余参数，无须掌握有关模型结构和系统纯时延的确切的先验知识，不仅给建模带来极大的方便，而且有利于提高预测精度和鲁棒性。6。

Under the giving trochoid of machine tool the kinamatic and dynamic performance are analyzed by the study evaluation utilities of ADAMS. The resulted analysis curves can be helpful in synthetizing VAMT.

并通过参数化虚拟样机进行了特定动平台轨迹下的运动学、动力学单参数分析研究，得到的一些曲线有助于优化机床尺度综合。

Finally, the idea of integer design and realization of the system are discussed in details.The carton and carton parts designed is parameterize, and consumer can adjust the carton and carton parts by using these parameters. Using piecing together technique in the system can make up the shortage of the existing carton structure CAD system. The method not only reduces the complicacy of the carton design, but can deal with every face of the carton, and it creates advantageous conditions in carton upholster for the next step.

本文所做的盒片和盒片零件是参数化的，用户可以根据实际需要对盒片及盒片零件的参数进行调整；将拼合技术应用于纸盒结构CAD系统中，可以弥补现有纸盒结构CAD系统的不足；采用拼合技术拼合盒片的设计方法，不但降低了纸盒结构设计的复杂性，而且可以单独处理成盒后的每一个盒面，为下一步对纸盒进行装潢设计创造了有利条件。

This article elabo rates the theory and method for realizing parametrization of the original design .In the DCL interface,graph data videotex has been realized by using standard th ree-dimension object model,stamp parameter has also been introduced.

本研究针对AutoCAD平台上的三维实体功能以及PDB管理功能的DCL技术，提出了利用标准结构的主要特征参数实现原型图的参数化方法。

The four-bar linkage model of hydraulic support using virtual prototype technnique is established with the help of ADAMAS software.

介绍虚拟样机技术特点，利用ADAMS软件建立了液压支架的虚拟样机模型；对其四连杆机构进行动力学仿真分析，并将机构模型作参数化处理；进行优化设计，实现了液压支架四连杆机构设计参数的优化。

The basic parameters of symmetric arcuate tooth trace cylindrical gear can be calculated according to the comparative cylindrical gear.

还详细分析了对称弧线圆柱齿轮特殊参数的设计计算方法，并进行了基于特征的参数化计算机辅助设计，通过实例设计计算，得出三维仿真模型。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。