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matlabfunctiontableused
matlab常用函数表有一般函数的应用及说明(matlab function table used for general functions of the application and instructions)
- 2010-05-16 09:19:07下载
- 积分:1
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double-qga
双链量子遗传算法双链量子遗传算法双链量子遗传算法双链量子遗传算法双链量子遗传算法双链量子遗传算法(DOUBLE qGADOUBLE qGADOUBLE qGADOUBLE qGADOUBLE qGADOUBLE qGADOUBLE qGA)
- 2011-09-18 15:24:00下载
- 积分:1
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iiiiiihgbvv
合成地震记录的matlab程序,很实用,适合初学者联系实用(Synthetic seismogram matlab program, very useful for beginners Contact Useful)
- 2013-11-05 00:45:47下载
- 积分:1
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yinpin
音频频谱的分析程序,在程序中实现了采样速率的提取(Audio spectrum analysis procedures, the procedures to achieve a sampling rate of extraction)
- 2007-10-10 10:40:27下载
- 积分:1
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Project
matlab实现包络检波的一个小函数,以及2FSK信号生成和相干解调(A small function to achieve Envelope detection)
- 2017-06-14 20:25:30下载
- 积分:1
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FBG
通过传输矩阵法计算线性啁啾光纤光栅和高斯变迹光纤光栅的时延和反射谱曲线(Grating Through the transfer matrix method to calculate the linear chirped fiber grating and fiber Bragg grating Gaussian apodization of the delay and reflection spectrum curve)
- 2011-07-26 13:34:14下载
- 积分:1
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基于非相干信号子空间(ISM)的宽带源DOA估计方法
说明: 基于非相干信号字空间宽带源DOA估计方法,代码可运行(The matlab code is the DOA estimation for wide-band signals by ISM. It works well.)
- 2021-05-16 15:30:02下载
- 积分:1
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aw
说明: 利用matlab语言编写的水下简正波分析程序,可计算P(Matlab language use underwater normal wave analysis procedures, calculate P)
- 2007-12-09 17:57:08下载
- 积分:1
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solar
MATLAB并行槽式太阳能板的学习,设计整定,及计算(Solar Power Parabolic Trough Trade Study)
- 2010-09-20 10:59:19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