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布尔运算的
相关语句
  boolean operation
    The synopsis of Boolean operation’s research status quo is offered, and a Boolean operation algorithm based on inner point recognition on the basis of Wu Yunxing’s edge recognition is put forward.
    论文对二维布尔运算的研究现状进行了概述,在武运兴边界识别算法的基础上提出了一种基于“内点”识别的布尔运算算法。
短句来源
    Aiming at this instance a correct algorithm based on 2-d Boolean operation is put forward to correct STL entity model slice.
    针对这种情况,本文提出了基于二维布尔运算的纠错算法,实现了对STL实体模型切片轮廓环的纠错。
短句来源
    The characteristics of several algorithms of automatic support generation and an algorithm of automatic support generation of FDM based on polygon Boolean operation have been presented. A way used for the layout of support paths consisting of densely covered type and loosely covered type has been established.
    简述了几种FDM支撑自动生成算法的特点,提出了一种基于多边形布尔运算的FDM支撑生成算法,并构建了一种密集与疏松相复合的支撑路径规划方法。
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  boolean operation
Inspired by digital technique, we introduce two kinds of boolean operation into GA to develop a novel mutation operator and discuss its contribution to preventing the loss of critical alleles.
      
This separation makes the Boolean operation process simple and robust.
      
Using Graftree, the Boolean operation produces no risk of yielding topological conflicts, which often cause the simulation to stop abnormally.
      
The method has been powered adding a multi-layered, bit-masking oriented data structure and a boolean operation based control mixer, allowing special blended crossover operators obtained by superposition of the standard ones.
      
Then, through a Boolean operation of the splint blank and the maxilla-mandibula model, the dental splint model is formed.
      
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The tradirional verification of 3 - dimension holes is simplified to 2 - dimension. This method often makes mistakes in the higher accuracy condition. Other methods such as surface net treatment, boolean calculation, are very complicated. In this paper, we introduce an accurate verification method for 3 - dimension holes from the theory of calculation geometry. It is simple, efficient and practical.

二维空间孔道的传统校核方法是把三维问题化成二维问题,再简化或近似处理,这样的方法在高精度场合往往不能满足设计要求;还有的是对孔表面网格化、布尔运算等,算法复杂,难于实现。本文从计算几何理论上探讨了三维空间孔的精确校核方法,简单、易行、可靠。

Machining process simulator is an essential support environment for concerting the perts of CIMS and completing CIMS design.Based on the simulation support requirement,a machining process simulator MPS has been developed. The peper introduces its structure, key techniques and main algorithms,including geometry and kinematics modeling, NC code translation, collision and interference check,material removal,animation processing,etc. The peper presents a solid represent method Ray-rep to simplify the Boolean operation...

Machining process simulator is an essential support environment for concerting the perts of CIMS and completing CIMS design.Based on the simulation support requirement,a machining process simulator MPS has been developed. The peper introduces its structure, key techniques and main algorithms,including geometry and kinematics modeling, NC code translation, collision and interference check,material removal,animation processing,etc. The peper presents a solid represent method Ray-rep to simplify the Boolean operation process and improve the material removal speed, gives Voxel+B-Rep algorithm to solve the quick detection problems of collision and interfereence, and presents a real NC milling simulation example.

基于CIMS对仿真技术的需求,研究开发了协同CIMS工程各环节和完成CIMS工程设计必不可少的支持环境──加工过程仿真器MPS。介绍了MPS的结构、关键技术和主要算法(包括几何及运动建模、数控代码翻译、碰撞和干涉检验、材料切除以及加工动画等),提出了实体Ray-Rep表达方法(简化了实体间的布尔运算过程,大大提高了材料切除过程的仿真速度)和Voxel十B-Rep算法(解决了加工过程碰撞和干涉仿真的快速检测问题)。最后给出了MPS的应用实例。

A problem about the draft design exists usually when machine parts are designed (for example arranging holes, pockets, boss in a plane). It is difficult to design them directly on part′s graphic.In order to reduce the use of Boolean operation as less as passible, a method of draft design is presented in this paper to solve the problem effectively by using the work plane and the reference net.

在机械零件的计算机辅助设计过程中,存在着草图设计问题,例如在零件的某一个面上布置孔、槽、凸台等的位置,要直接在整个零件图形上布置和设计比较困难,为尽量减少布尔运算的使用,本文提出了一种草图设计方法,利用工作平面和参考网格,有效地解决了这个问题

 
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