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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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wangloucaishuozi
網絡對戰猜數字,可以网络对战的,VB编写的(Network猜数字war, the war can network, VB prepared)
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- 积分:1
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02-Qt-Designer-application
Qt Designer应用东软培训资料,对初学者很有用。这是第二部分。(Qt Designer application Neusoft training materials, useful for beginners. This is the second part.)
- 2013-07-29 09:14:21下载
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_1039401449_178
说明: PS制作的素材,很实用哦,可以用于很多不同的环境,帮助你做出可观的图像。(PS production materials and practical Oh, can be used in many different environments, and help you make considerable images.)
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test_database
利用mfc编程实现acess数据库的存储与访问,对于小型的数据库很实用(Mfc programming using acess database storage and access, the database is very useful for small)
- 2011-11-29 10:27:49下载
- 积分:1
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111.tar
Problem Description
对于输入的每个字符串,查找其中的最大字母,在该字母后面插入字符串“(max)”。
Input
输入数据包括多个测试实例,每个实例由一行长度不超过100的字符串组成,字符串仅由大小写字母构成。
Output
对于每个测试实例输出一行字符串,输出的结果是插入字符串“(max)”后的结果,如果存在多个最大的字母,就在每一个最大字母后面都插入"(max)"。
- 2012-02-27 23:12:14下载
- 积分:1
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bcgsjy@linyiren
梁肇新的<编程高手箴言>,程序员必读()
- 2007-09-17 10:14:55下载
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yantuo
地震勘探反演方法
正演延拓
假设炮点在地层最底层,向上延拓(Forward seismic inversion method assuming continuation shot in the bottom of the formation, upward continuation)
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consumecelt
进程调度是处理机管理的核心内容,本实验要求用C语言编写和调试一个简单的进程调度程序(Process scheduling is the core content of the processor management, this experiment requirement written in C language and debugging process scheduling is a simple procedure)
- 2017-07-26 14:10:42下载
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Test
正则表达式运行小程序正则表达式运行小程序(Regular expressions run the applet)
- 2011-12-29 18:56:37下载
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