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mcenter
移动丝印到器件中心的skill程序,非常实用(move refdes to the center of symbol)
- 2010-09-03 10:09:07下载
- 积分:1
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MATLAB
一、 牛顿-拉夫逊法概要
首先对一般的牛顿-拉夫逊法作一简单说明。已知一个变量X的函数
(4-6)
解此方程式时,由适当的近似值X(0)出发,根据 (4-7)
反复进行计算,当X(n)满足适当的收敛判定条件时就是(4-6)式的根。这样的方法就是所谓的牛顿-拉夫逊法。
式(4-7)就是取第n次近似解X(n)在曲线 上的点 处的切线与X轴的交点作下一次X(n+1)值的方法。参考图4-2(a)。在这一方法中为了能收敛于真解,初值X(0)的选取及函数f(X)必须满足适当的条件,如图4-2(b)所示的那种情况就不能收敛或收敛到别的根上去。
这一方法还可以做下面的解释,设第n次迭代得到的解与真值之差,即 的误差为 时,则
(4-8)
把 在 附近对 用泰勒级数展开
(4-9)
上式略去 以下的项
(4-10)
的误差可近似由上式计算出来
图4-2
(4-11)
比较式(4-7)和(4-11),可以看出牛顿-拉夫逊法的修正量和 的误差的一次项相等。
用同样的方法考虑,给出对n个变量 (:Because of the importance and complexity of power system, better algorithm and programme language
is very important . An interior point method based on the perturbed Karush2Kuhn2Tucker (KKT) condition is pre2
sented in this paper , where the method and process for the optimal power flow is treated through the Matlab’s
symbolic math toolbox and Mfunction is also presented. Using the symbolic code , it can improve the adaptability
of the programme dramatically. The advantage is that , what we need to do is change the model expression. We
can make use of the symbolic programme to check our programme while we write the Mfunctions. Using the Mat2
lab , we find the optimal solutions and calculate quickly and efficiently. It has proposed the powerful and unique
functions of Matlab in the optimization and calculation for power system.
Key words :power system symbolic calculation optimal power flow interior point method)
- 2020-07-08 16:38:56下载
- 积分:1
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sinstoolbox
惯性导航工具箱 使用时加入到matlab工具箱内即可(inertial navigation system)
- 2015-12-24 20:34:19下载
- 积分:1
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Matlab_Fox_Li_Numerical_Iteration
光电综合实验,平行平面腔的数值迭代解法,即Fox_Li数值迭代法。对于之前网上某位仁兄给出的代码给出了优化,主要是使用了一个子函数,使得代码清晰容易阅读。而且拥有GUI界面也更像做程序这件事情。---南邮某学子(Fox_Li numerical iteration. A short and smart program in Matlab, as well optimized in the aspect both of code and execution.)
- 2010-10-15 13:44:38下载
- 积分:1
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A-Guide-to-MATLAB-for-Beginners-and-Experienced-U
This book is a short, focused introduction to MATLAB, a comprehensive
software system for mathematics and technical computing. It will
be useful to bothbeginning and experienced users.
- 2011-04-20 17:56:55下载
- 积分:1
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WMX-mimo2
Great information about alamouti
- 2013-11-10 10:26:14下载
- 积分:1
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diagnose
故障诊断matlab源代码,能够正确识别故障的类型(Fault diagnosis matlab source code, able to correctly identify the type of fault)
- 2020-12-07 14:59:22下载
- 积分:1
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Xiao
Xiao信道模型的建立及仿真,还有自相关函数的仿真结果(Xiao channel model simulation correlated function)
- 2021-03-25 16:19:13下载
- 积分:1
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cyclic
this is file that how you can encode cyclic code
- 2011-02-09 12:38:09下载
- 积分:1
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InvertedPendulumControled_PID
SimMechanics pendulum used for control optimization
- 2014-01-25 16:05:24下载
- 积分:1