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ISO22900
ISO 22900 1-3 道路车辆通信接口模型(ISO 22900 1-3 road vehicle communication interface model)
- 2009-11-28 20:53:32下载
- 积分：1
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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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Modern-Communications-Jamming
该书是一本通信对抗专业的实用参考书。系统地介绍了现代抗干扰通信技术(主要是直接序列扩谱和跳频扩谱)和抗干扰通信的检测技术，讨论了每一种基本抗干扰信号类型的干扰技术，包括干扰直接序列扩谱信号、干扰快跳频扩谱信号、干扰慢跳频扩谱信号和干扰直接序列扩谱/跳频扩谱混合信号。该书的读者对象是电子战和通信对抗领域的工程师和科技工作者，也可供通信领域的科技工作者参考。(Content HighlightsAnti-Jam Communications and Electronic Countermeasures. Radio Frequency Propagation. Signaling for AJ Communications. Jamming Techniques. Anti-Jam Signal Detection. Jamming Direct Sequence Spread Spectrum Systems. Jamming Fast Frequency Hopping Systems. Jamming Slow Frequency Hopping Systems. Jamming Hybrid Spread Spectrum Systems.)
- 2017-02-27 19:59:50下载
- 积分：1
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111111
数字图像处理的一些资料，希望对大家有点帮助！(Digital image processing of some information I hope all of us a little help!)
- 2009-12-25 21:38:17下载
- 积分：1
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s-
说明： C++大学基础教程，北京邮电大学电信工程学院，计算机技术中心(Essentials C++ University, Beijing University of Posts and Telecommunication Engineering, Computer Technology Center)
- 2013-04-03 15:31:37下载
- 积分：1
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my-hacker-girlfriend
一本关于黑客的电子书,这本书很火，在网上很难下载(o other about hacker book ,my girl friend
is a hacker, the book is very splendid)
- 2013-05-03 21:54:06下载
- 积分：1
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VisualCplus6.0
VisualC++6.0基础与实例教程，VisualC++6.0使用说明，还有具体的实例，以及源代码(VisualC++6.0-based tutorials and examples, VisualC++6.0 instructions for use, there are specific examples and source code)
- 2010-01-14 14:30:03下载
- 积分：1
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IEEE802.11
该书籍详细介绍了802.11底层协议的相关算法机制，能够为802.11的底层协议改造提供最基础的技术支持。(The book details the underlying 802.11 protocol mechanisms related algorithms that can transform the underlying protocol for the 802.11-based technology to provide the best support.)
- 2011-01-06 15:06:14下载
- 积分：1
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cPP-code
徐士良c++第四版基础教程代码，简单易懂(Based tutorial Xu Shiliang fourth edition of c + + code, easy to understand)
- 2016-03-21 09:29:51下载
- 积分：1
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VCdatabase
说明： 详细介绍了用VC.NET开发城市基础地理数据库的实例，用于城市测绘，城市基础地理系统建设的重要参考。(Described in detail with the development of urban infrastructure VC.NET examples of geographic database for urban mapping, urban infrastructure an important geographic reference system.)
- 2009-08-17 22:36:26下载
- 积分：1
