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ICALABSPv2_2
很好很强大的独立分量分析程序,这个大家都可以用来看看(A very powerful independent component analysis program, take a look at this we all can be used to)
- 2010-09-29 10:46:45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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ROCcurve
计算信号检测时的ROC曲线,计算结果比较准确,完全符合要求。(Computed the ROC curves.)
- 2017-11-23 15:12:43下载
- 积分:1
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DSPecg
用Matlab实现的心电信号的处理源程序!(using Matlab ECG signal processing source!)
- 2006-07-25 09:39:46下载
- 积分:1
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memory-prodistorition-
基于saleh模型的记忆放大器仿真程序,用做预失真均衡项目可以用的前置记忆功率放大器的非线性失真模型。(simulation for memory prodistorition )
- 2012-05-06 15:34:11下载
- 积分:1
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MATLAB-sample
此文件包含大量matlab例程,尤其适合初学者,当学习资料在适合不过(This file contains a lot of matlab routines, especially for beginners, but when learning materials in a suitable)
- 2013-08-11 13:57:34下载
- 积分:1
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nonlinear-function-fitting-BP
MATLAB工具箱编写BP神经网络的非线性系统用于非线性函数拟合(Written MATLAB toolbox for nonlinear systems BP neural network for nonlinear function fitting)
- 2011-04-27 10:57:03下载
- 积分:1
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Lyapunov-solve-K
说明: Lyapunov求解K熵的matlab仿真程序(Solving Lyapunov entropy matlab simulation program K)
- 2011-04-06 15:27:54下载
- 积分:1
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ipexhistology
It is related to image processing
- 2011-06-22 17:14:37下载
- 积分:1
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Archive
Test Bank for Problem Solving with C++: The Object of Programming
- 2014-09-11 16:10:21下载
- 积分:1