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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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singal_processing_and_demo_program
说明： 包含内容：离散时间系统与Z变换、离散傅里叶变换及其快速算法、无限长单位脉冲响应(IIR)滤波器的设计、有限长单位脉冲响应(FIR)滤波器的设计、数字信号处理系统的实现、多采样率信号处理(singal processing and demo program)
- 2020-12-02 20:19:26下载
- 积分：1
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Ada-Booted
人脸识别原理介绍 有一些算法介绍 并附加图解 适合初学者(language：English from university of British)
- 2010-01-17 00:25:55下载
- 积分：1
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opening-system
说明： 操作系统课件 习题 ppt 和很好的课后习题答案(Operating system software ppt and good after-school exercises exercises answers)
- 2011-03-12 10:40:57下载
- 积分：1
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ANSYS--errors-and-solutions
该文件为ansys常见错误提示及其解决办法(ANSYS common operation errors and their solutions)
- 2014-05-17 09:56:06下载
- 积分：1
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depth_image_analysis
深度图像分析 [孙龙详 程义民 王以孝 孙启彬] 电子工业出版社(depth image analysis)
- 2009-06-16 20:57:45下载
- 积分：1
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sdsdsdsad
其中包括图像压缩的基本编码方法如Huffman编码算术编码\JPEG 2000H.261压缩编码标准小波变换编码\运动估计算法视频图象采集的VC实现等.-including the basic image compression coding methods as Huffman coding arithmetic coding JPEG 2 000 H.261 coding standard Wavelet Transform Coding motion estimation algorithm Video Image Acquisition is the VC now other(including the basic image compression coding methods as Huffman coding arithmetic coding JPEG 2 000 H.261 coding standard Wavelet Transform Coding motion estimation algorithm Video Image Acquisition is the VC now other)
- 2010-03-13 08:43:10下载
- 积分：1
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现代电力系统分析.rar
王锡凡先生写的现代电力系统分析，研究生教材(Modern Power System Analysis, Graduate Textbook by Mr. Wang Xifan)
- 2021-02-17 23:59:45下载
- 积分：1
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Tutorial-VB
Visual basic complete tutorial for connection to db s
- 2010-01-28 13:18:40下载
- 积分：1
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DiscreteMathematicsandItsApplications
一本非常NB的关于计算机的离散数学与应用书籍！(Discrete Mathematics and its Applications is a focused introduction to the primary themes in a discrete mathematics course, as introduced through extensive applications, expansive discussion, and detailed exercise sets. These themes include mathematical reasoning, combinatorial analysis, discrete structures, algorithmic thinking, and enhanced problem-solving skills through modeling. Its intent is to demonstrate the relevance and practicality of discrete mathematics to all students. The Fifth Edition includes a more thorough and linear presentation of logic, proof types and proof writing, and mathematical reasoning. This enhanced coverage will provide students with a solid understanding of the material as it relates to their immediate field of study and other relevant subjects. The inclusion of applications and examples to key topics has been significantly addressed to add clarity to every subject.
True to the Fourth Edition, the text-specific web site supplements the subject matter i)
- 2009-12-07 21:32:17下载
- 积分：1
