-
MOSGA4
基于SPEA方法的多目标遗传算法程序,本程序为通用包,可自行修改.(based SPEA methods of multi-objective Genetic Algorithms procedures, the procedures for the general packet may amend its own.)
- 2007-04-28 12:10:04下载
- 积分:1
-
gravity-invertion
实现重力反演,提供实例,建立模型正演,然后进行反演(Realize the gravity inversion, provide examples, modeling forward and inversion)
- 2021-04-08 15:59:00下载
- 积分:1
-
TheoryOfWaveletAnalysisAndUsingMATLAB7InPractice
小波分析理论与matlab实现 需用超星浏览器打开(wavelet analysis using matlab)
- 2010-01-22 16:28:23下载
- 积分:1
-
GLTJmatlab
MATLAB在概率统计中的若干命令和使用格式,这些命令存放于MatlabR12ToolboxStats中。(MATLAB in Probability and Statistics in the number of orders and the use of format, the commands stored in MatlabR12ToolboxStats in.)
- 2008-07-21 08:53:44下载
- 积分:1
-
Matlab100programmings
100个实用的MATLAB程序,对初学MATLAB者很有用(100 useful MATLAB programs, MATLAB are very useful for beginners)
- 2010-05-10 10:41:39下载
- 积分:1
-
a-13
利用MATLAB实现a律13折线的非均匀量化折线的编写。 (a—13 MATLAB )
- 2010-05-14 10:44:17下载
- 积分:1
-
viterbi
用matlab软件仿真了从卷积码编码,QPSK调制,AWGN信道,QPSK解调,以及Viterbi译码。(Using Matlab Simulate from the coding of convolutional code,Qpsk modulation ,AWGN channel ,Qpsk demodulation and Viterbi decoding。)
- 2021-04-10 19:18:58下载
- 积分:1
-
Acoustic_Model_Hybrid-ABC
实现2D声波方程正演,用于地球物理勘探中的声波正演(Achieve 2D acoustic wave equation forward modeling for geophysical exploration sonic Forward)
- 2014-12-03 19:25:18下载
- 积分:1
-
circlur_array
This program print pattern for circlar Array (uniform) Antenna
- 2020-12-06 22:19:22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