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m043531
the document is a datasheet of Mifare 4K chip, and is useful to understand the Mifare applications
- 2010-01-27 12:35:45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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Spherical-shell-model
利用ansys进行球壳的建模，可以用来模拟液体储罐的大型工业结构的分析计算(Ansys modeled using a spherical shell, can be used to simulate large-scale industrial structure analysis and calculation of liquid storage tanks.)
- 2021-01-20 20:48:41下载
- 积分：1
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book_LATEX
LATEX in Thai Version
- 2010-07-01 13:01:36下载
- 积分：1
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alibaba
说明： 阿里巴巴暑期实习大礼包，简介了阿里巴巴的实习流程和往年笔试面试的题目。(Alibaba summer internship spree About Alibaba internship process and written examination and interview subject in previous years.)
- 2010-04-19 14:54:12下载
- 积分：1
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dzsj
说明： 关于电子设计方面的一些知识，希望对大家有帮助(On some knowledge of electronics design, we want to help)
- 2011-03-23 13:51:17下载
- 积分：1
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ginger
说明： python flask advance
- 2019-03-15 10:02:35下载
- 积分：1
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gps
自适应调零天线GPS抗干扰技术研究简析，介绍了智能天线的gps应用(Adaptive nulling antenna Analysis of GPS anti-jamming technology research, introduced the application of smart antenna gps)
- 2009-04-27 23:13:00下载
- 积分：1
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数据挖掘概念与技术
初级了解数据挖掘可下载，大致明白什么是数据挖掘以及简单的案例(Preliminary connection data mining)
- 2018-05-29 15:58:16下载
- 积分：1
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stm32book.pdf
说明： STM32 handbook (Rus), Real HW in real life.
- 2021-01-29 05:22:32下载
- 积分：1
