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S7300_PPT
西门子S7300教学PPT,很适合入门学习之用(Siemens S7300 Teaching PPT, is suitable for entry-learning)
- 2009-04-20 09:02:00下载
- 积分：1
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MT500
MT500是山特公司该型号的UPS后备电源的使用说明和编程的解析 (MT500 is UPS with ShanTe company,this is using and expleam)
- 2009-02-24 17:58:13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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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
- 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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g
说明： 广义解调时频分析方法在调制信号处理中的应用-杨宇(Generalized demodulation time-frequency analysis methods in the modulation signal processing applications- Yang)
- 2013-03-20 11:09:18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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S7-PLCSIMV5.4
西门子仿真编程软件S7-PLCSIM V5.4，用于S7-300/400系列PLC程序的仿真(S7-PLCSIM V5.4 offers the following new features with this release:
DP, Industrial Ethernet and PC Internal connection types supported in addition to MPI
Formerly, S7-PLCSIM used a default connection of MPI, address 2. With S7-PLCSIM V5.4, you can browse STEP 7 projects and select a networked node for establishing a simulation connection. S7-PLCSIM simulates the CPU of the selected node, all nodes that belong to that CPU, and the subnet of the selected node.
Increased number of blocks supported for simulation
S7-PLCSIM supports a set of OBs, SFBs, and SFCs as described in the electronic manual and online help. Of these, some are NOPs that is, they do not perform any operation. With S7-PLCSIM V5.4, the number of blocks that are not NOPs has increased.)
- 2020-06-25 23:40:01下载
- 积分：1
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AEC-Spec
AEC 回声消除参考书，里面全面介绍了AEC相关理论。(AEC spec documents)
- 2010-11-07 12:53:16下载
- 积分：1
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GamutDM
说明： 数据挖掘方面的知识的介绍，希望对大家有帮助(data mining knowledge, we hope to help)
- 2006-03-27 16:45:15下载
- 积分：1
