登录
首页 » matlab » MATLAB

MATLAB

于 2020-07-08 发布 文件大小:9KB
0 273
下载积分: 1 下载次数: 91

代码说明:

  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)

文件列表:

新建 Microsoft Word 文档.doc,61952,2010-05-18

下载说明:请别用迅雷下载,失败请重下,重下不扣分!

发表评论

0 个回复

  • Resistivity
    大地电磁测深(MT)一维层状模型电阻率正演。计算不同频率的电阻率,反应电阻率随深度的变化。(Magnetotelluric sounding (MT) one-dimensional layered model of resistivity forward modeling. Calculate the resistivity of different frequencies, the reaction changes in resistivity with depth.)
    2009-12-11 17:05:50下载
    积分:1
  • OWTS-tan
    基于OWTS系统的电力电缆介质损耗正切角检测,能够方便快速的对电力电缆进行检测。(Based OWTS system power cable dielectric loss tangent detection, able to facilitate the rapid detection of the power cable.)
    2013-05-24 15:55:53下载
    积分:1
  • Ultrasonic_beam_structure
    Mathematic model of acoustic field for ultrasonic transducers according to "Ultrasonic beam structures in fluid media" paper
    2013-09-10 22:10:05下载
    积分:1
  • reg
    度分秒转化弧度,需要时加上自己的参数值可直接调用函数(Arc minutes and seconds into degrees, if necessary with their parameter values can call the function directly)
    2010-11-05 15:11:18下载
    积分:1
  • heat2
    heat2 implecit heat2 implecit
    2012-06-03 02:52:00下载
    积分:1
  • pf
    说明:  用于对非线性方程的参数估计和最优估计的粒子滤波算法,保管一看就会,步骤很清晰的。(the solution of non-line function by pf filter)
    2010-08-19 15:29:30下载
    积分:1
  • batewosi
    是对巴特沃斯滤波器设计的详细讲述,对于初学者有很好的帮助。我觉得比较实用。(Butterworth filter design is described in detail for the beginners have a good help. I think the more practical.)
    2009-12-05 20:07:17下载
    积分:1
  • LP01
    利用模式理论,对给定几何尺寸以及折射率分布的光纤进行模式求解与绘图,该程序给出LP01模的求解与绘图。(the LP01 mode of the fiber. )
    2013-09-24 21:19:16下载
    积分:1
  • vel_com
    This is 1D, 2D, 3D earth quake ray tomography forward and inverse procedures
    2015-02-26 17:21:55下载
    积分:1
  • Time-Frequency-Domain-bss
    Time-Frequency Domain bss
    2014-02-20 08:42:23下载
    积分:1
  • 696518资源总数
  • 106245会员总数
  • 18今日下载