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biaodashiqiuzhi
表达式求值程序,很好的实现表达式的ascii码输入,到数值计算(Expression evaluation procedures, to achieve a very good expression of the ascii code input to the numerical calculation)
- 2009-07-16 16:10:20下载
- 积分:1
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VCAccess
此demo包含vc操作Access数据库的链接、以及增删改查的基本操作,均提供的有接口,方便用户操作,并且提供了一些模糊查询语句供用户参考~~(This demo contains the Access database, the link vc operations, as well as additions or deletions to change the basic operation of search are provided with interfaces, user-friendly operation, and provides a number of fuzzy query for the user' s reference ~ ~)
- 2010-02-24 13:51:31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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4675465764
VB将数据库导出到TXT文本文件中,有需要的就下载吧。(VB database export to TXT text file, there is a need to download it.)
- 2013-08-22 11:08:07下载
- 积分:1
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ansyschangjianwentihuizong
里面汇总了一些常见的ansys中遇到的问题或错误,仅供参考(ansys FAQ summary, there are some problems often encountered error for reference purposes only)
- 2015-04-30 09:20:50下载
- 积分:1
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bianyaqi
变压器设计软件,采用CAD技术改造变压器传统设计(Transformer design software, the use of CAD technology traditional transformer design)
- 2008-02-26 08:45:16下载
- 积分:1
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BasicSpeech
Code for microsoft SAPI using. Enabling ASR on your applications.
- 2011-11-08 04:09:06下载
- 积分:1
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CRC
说明: CRC7,CRC8,CRC9,CRC16编解码,查表方法实现(CRC7, CRC8, CRC9, CRC16 codec, look-up table method)
- 2009-07-31 11:36:19下载
- 积分:1
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Xcel
本程序可对EXCEL文件进行读写,同时建立了一个专门访问EXCEL文件的类CExcel,可供大家参考。(This procedure can be carried out on the EXCEL file to read and write, while the establishment of a specialized type of access EXCEL file CExcel, for your reference.)
- 2009-05-31 11:37:50下载
- 积分:1
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yuandaima3
这是我C语言编的一些小游戏的应用程序,希望大家多多指教!(This is my C-game series a number of small applications, I hope everyone exhibitions!)
- 2008-05-11 22:05:08下载
- 积分:1