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PeasonICA
A package for independent component analysis based on high order statistics
- 2009-12-05 05:47:07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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matlab_use_usbcam
在matlab中调用PC自带摄像头,并对采集到的视频进行相关处理(
PC camera comes calling in matlab, and collected relevant video processing)
- 2015-01-06 16:54:52下载
- 积分:1
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qsort_main
采用递归的方法实现快速排序,在MATLAB的环境(fastsort in matlab)
- 2011-12-18 21:19:47下载
- 积分:1
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airfoilprep
一种用于风力机设计和性能校核的翼型气动数据预处理,包括panel插值,全周插值,3D修正等。使用python语言
(Airfoil data preprocessing for wind turbine design and performance verification using python language)
- 2015-06-09 14:41:21下载
- 积分:1
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ica_demo_new
A wonderful ica toollbox about blind source separation for the beginners
- 2007-08-11 23:14:21下载
- 积分:1
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genDTMF
说明: 用matlab仿真产生双音多频DTMF信号.(Simulation using matlab generate DTMF DTMF signal.)
- 2008-10-13 09:05:42下载
- 积分:1
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LS_Matlab65
这是一个利用MATLAB6.5进行航迹跟踪的程序序,采用了最小二线性估计的方法来进行跟踪。(This is a track used for tracking MATLAB6.5 procedures sequence, using a minimum of two linear estimation methods for tracking.)
- 2007-06-01 18:36:34下载
- 积分:1
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Fiber_modes
说明: 本压缩包中还有13个程序,模拟了光在光纤中传输时的模式。希望能够给大家一点帮助(The compression package also 13 procedures, simulation of optical transmission in fiber mode. Want to give us some help)
- 2008-10-20 21:33:42下载
- 积分:1
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VC-Digital
一本关于VC和VB数值计算的书,里面有个库,包括了很多的数值计算函数,不用matlab也可以实现数值计算了(A numerical calculation of VC and VB book, which has a library, including a lot of numerical functions can be achieved without matlab numerical calculation of the)
- 2011-09-27 21:15:12下载
- 积分:1