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NURBS110707
高速切削加工技术是一种先进的制造技术,具有强大的生命力和广阔的应
用前景,已成为切削加工的主流。数控插补技术是数控系统实现轨迹运动控制
的基础,插补运算是CNC系统软件实现运动控制的核心模块,插补算法的优劣
将直接影响到CNC系统的性能。因此,实现一种高精度和高速度的插补方法是
插补的关键所在。
本文在分析传统基准脉冲插补、数据采样插补的算法的基础上,着重研究
了三次NURBS曲线实时插补技术,针对部分算法的不完整或效率低,提出了
一种简单快捷的插补算法。采用NURBS曲线的矩阵表达式,将整个插补过程
分解为插补预处理和实时插补。在插补预处理中完成了大量的计算,预处理的
计算结果直接应用于实时插补,使插补算法满足了NURBS曲线插补的实时性
要求,再辅以必要的轮廓误差控制,实现了加工速度自适应于加工路径的
NURBS曲线直接插补。
本文讨论的插补算法采用C++语言实现,并在VC++6.0的编程环境中实现
了插补算法的计算机仿真,验证了算法的正确性和可行性。(The high speed cutting is one of advanced manufacture technique,which has the powerful vitality and the broad application,and already became the mainstream of machining.The interpolation technology of NC is the foundation of path s control in the CNC system,and the interpolation operation is the core module of
CNC system software,which comes the motion control true.The interpolation
algorithm,whose function is good or bad,directly influences the performance of CNC system.So,a kind of interpolation method with the high accuracy and high speed is the key of interpolation.
Based on analyzing the traditional pulse interpolation and data sampling
interpolation,this paper emphasizes on the NURBS curve real-time interpolation
technology.In view of the partial algorithms which is incomplete and the low efficiency,this paper propose a simple and quick interpolation algorithm.Using the
matrix representation of NURBS curve,the whole interpolation process is divided into appropriate pretreat)
- 2011-07-07 11:46:17下载
- 积分:1
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MT4
机器翻译的学习资料,是ppt格式的,对于机器人翻译,计算机专业的人很有帮助(Machine translation of learning materials, is ppt format for the robot translation, the computer professional who helps)
- 2010-01-09 11:02:34下载
- 积分:1
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WinCImage
说明: 源码 for "C語言數位影像處理" 吳上力 編譯(Source code for "C language digital image processing")
- 2009-07-24 11:10:54下载
- 积分:1
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final_code
gsm coding for alarm system
- 2010-08-07 22:19:37下载
- 积分:1
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gscplex_tutorial
CPLEX的学习资料,最近用这个软件的人越来越多了,尤其是PPT文件,很适合初学者快速入门
(CPLEX learning materials, most recently with this software, more and more people, and especially the PPT file, it is suitable for beginners Quick Start)
- 2009-11-26 16:50:15下载
- 积分:1
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code
华为OJ训练平台的基础篇的所有题目答案,已总结为各种类型,写成子函数,可以直接调用(Huawei OJ Basics training platform for all the questions answers are summarized for all types, written subroutines can be called directly)
- 2014-11-24 14:55:52下载
- 积分:1
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jishiqi1
使用C++实现的小程序。计时器单位转换。输入为整型数单位为秒,输出格式为DDD:HH:MM:SS的时间。华为机试。(Use C++ achieve applet. Timer unit conversion. Enter an integer number of seconds, the output format is DDD: HH: MM: SS time. Huawei machine again.)
- 2013-12-06 09:48:52下载
- 积分:1
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Fluent_technology_and_example
本书基于Fluent 6.2.16版本、Gambit 2.2.30版本和Tecplot 10.0版本,共13章。全书首先详细介绍了Fluent软件及其相关的理论知识,然后通过典型的实例来讲解Fluent在传热、传质及流场等实际工程中的应用方法和技巧,包括运动部件的速度场模拟、UDF和UDS的使用、并行计算的设置、计算区域的绘制和边界条件的定义、Tecplot的数据处理等。每个实例都有详细的说明与详尽的操作步骤,读者只要按照书中的指示与方法操作,即可完成一个具体问题的数值模拟与分析,进而逐步掌握利用Fluent进行流体流动数值模拟的基本方法。
(Fluent 6.2.16 Based on the book version, Gambit 2.2.30 version and the version of Tecplot 10.0, Chapter 13. First of all, the book detailed the Fluent software and its related theoretical knowledge, and then through a typical example to explain Fluent in heat transfer, mass transfer and flow field, such as practical engineering methods and techniques, including the moving parts of the velocity field simulation, UDF and the use of UDS, parallel computing setting, rendering the calculation region and the definition of boundary conditions, Tecplot' s data processing. Each have a detailed description of examples with detailed steps, readers as long as the book' s instructions and in accordance with the method of operation, to complete a specific question of the numerical simulation and analysis, and gradually master the use of Fluent for numerical simulation of fluid flow of the basic method .)
- 2009-06-16 16:13:22下载
- 积分:1
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Ogre_sjms
OGRE 3D引擎所含设计模式之分析
OGRE 3D引擎所含设计模式之分析(not)
- 2009-05-10 18:27:59下载
- 积分:1
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sdk
海康SDK包,非常好用,里面他的流程写的很详细,你二次开发的时候可以完全参照他上面的写,谢谢。(sdk)
- 2010-10-16 23:04:32下载
- 积分:1