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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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python爬虫小程序
说明： 用python编的爬虫小程序，希望大家喜欢，谢谢大家！(python internet reptile book)
- 2020-06-22 20:20:01下载
- 积分：1
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Wireless_Sensor_Networks_Signal_Processing_and_Com
关于无线传感器网络的非常好的一本书！英文版的！(On wireless sensor networks a very good book! English!)
- 2008-12-29 19:20:52下载
- 积分：1
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Fatigue-damage-crack-growth
英文书籍，详细介绍疲劳失效机理，断裂力学及裂纹扩展理论，并附有相关计算程序。(Fatigue Damage,Crack Growth and
Life Prediction)
- 2017-05-02 19:38:05下载
- 积分：1
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kaggle_diabetic-master
A commented bash script to generate our final 2nd place solution can be found in make_kaggle_solution.sh.
Running all the commands sequentially will probably take 7 - 10 days on recent consumer grade hardware. If you have multiple GPUs you can speed things up by doing training and feature extraction for the two networks in parallel. However, due to the computationally heavy data augmentation it may be far less than twice as fast especially when working with 512x512 pixel input images.
You can also obtain a quadratic weighted kappa score of 0.839 on the private leaderboard by just training the 4x4 kernel networks and by performing only 20 feature extraction iterations with the weights that gave you the best MSE validation scores during training. The entire ensemble only achieves a slightly higher score of 0.845.
- 2019-05-11 15:31:21下载
- 积分：1
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《MATLAB在数学建模中的应用》源程序
经典的建模书籍配合matlab 使用，对于本科生建模非常有用(The classic modeling books are used with MATLAB, which is very useful for undergraduate modeling.)
- 2018-09-20 20:03:46下载
- 积分：1
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crypto_api_doc
说明： 介绍关于crypto_api的相关使用说明，着重于运用。(Introduce the relevant instructions on the crypto_api focus on the use.)
- 2010-04-26 11:12:48下载
- 积分：1
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P020160325531348615122
顶级知名公司内部的培训资料，很好的资料培训资料，很好的资料(top company material .....................)
- 2016-12-21 19:06:00下载
- 积分：1
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HVDCandFACTS
HVDC and FACTS Controllers - Applications of Static Converters in Power Systems (Power Electronics and Power Systems)(HVDC and FACTS Controllers- Applications of Static Converters in Power Systems (Power Electronics and Power Systems))
- 2009-09-16 11:15:39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
