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JFO
考虑空穴效应的雷诺方程数值分析求解,MATLAB编程(Consider the effect of Reynolds equations hole)
- 2015-11-05 21:17:30下载
- 积分:1
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traceMode
optical fiber encryption in drpe
- 2012-01-15 22:52:45下载
- 积分:1
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ctmsim_v1_1
Ctmsim For Matlab 来自Mathwork官网,统计仿真工具,2014MCM A(Ctmsim For Matlab)
- 2014-02-08 20:09:13下载
- 积分:1
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sy
说明: 常用的数值积分方法(特别是梯形、Simpson方法、和Romberg算法),编制复合梯形公式,复合Simpson公式,Romberg算法的程序,数值积分方法的逐步精致化过程(Commonly used numerical integration methods (in particular, trapezoidal, Simpson method, and the Romberg algorithm), the preparation of composite trapezoidal rule, composite Simpson formula, Romberg algorithm procedure, numerical integration process of gradual refinement)
- 2010-06-14 20:28:16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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7879
这是matlab中的一个例子,请注意下载(This is the one example, attention is drawn to download)
- 2006-09-11 21:18:44下载
- 积分:1
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ConvertWGStoCarser
WGS 转换到Carser WGS 转换到Carser(ConvertWGStoCarser ConvertWGStoCarser ConvertWGStoCarser)
- 2013-03-20 10:18:35下载
- 积分:1
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ydtxyl
经典通信教材,移动通信原理,有吴伟陵,牛凯著写(Classical communication materials, mobile communication theory, there WU Wei-ling, cattle Kay of writing)
- 2011-12-04 20:31:02下载
- 积分:1
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SVM
说明: 支持向量机SVM的MATLAB实现,包括iris数据集、煤炭数据集等。(The matlab implementation of SVM, including iris data set, coal data set and so on.)
- 2020-07-06 17:38:52下载
- 积分:1
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Operacoes
Realiza o cisalhamento na imagem.
- 2010-07-03 09:57:21下载
- 积分:1