-
suanfa
多种实用算法 matlab 高级运筹学必备(matlab newton and so on)
- 2009-11-28 21:42:51下载
- 积分:1
-
BPSK
两发射天线四元素正交空时分组码编码研究,BPSK的matlab仿真程序,有对比图(Two transmit antennas four elements orthogonal space-time block coding research, BPSK matlab simulation program, there are comparison chart)
- 2014-01-09 11:58:17下载
- 积分:1
-
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
-
panel-2.12
panel for reducing gap in subfigures in matlab
- 2015-04-07 21:32:43下载
- 积分:1
-
FIR
利用MATLAB开发软件进行编程,实现了数字FIR低通滤波器的功能,程序直接可以运行!(Use MATLAB to develop software for programming, implementation of digital FIR low-pass filter function, the program can run directly!)
- 2009-03-02 13:44:18下载
- 积分:1
-
guangyihuxiangguan
求两个信号的时延估计,通过时延估计对声源实现定位(Ask the two signal delay estimation, time delay estimation of sound source by positioning to achieve)
- 2010-11-21 09:05:16下载
- 积分:1
-
code
这个代码是关于球体、直角体跟椎体目标的RCS计算matlab程序,简答明了,很适合初学者看的(This code is on the sphere, at right angles to the body with vertebral target RCS matlab program, the short answer is clear, it is suitable for beginners see)
- 2021-05-08 16:38:35下载
- 积分:1
-
Gauss-beam
code to solve the gauss equation in laser
- 2013-05-16 10:34:15下载
- 积分:1
-
图像滤波
说明: 用不同模板对图像进行高斯噪声、椒盐噪声进行中值滤波均值滤波(Gaussian noise, salt and pepper noise are filtered by different templates, and mean filtering is used)
- 2021-01-28 14:50:38下载
- 积分:1
-
multi-objective-wuth-BW_proposed_repair
modified NSGA-II for repair items
- 2012-05-16 16:32:08下载
- 积分:1