登录
首页 » matlab » MATLAB

MATLAB

于 2020-07-08 发布 文件大小:9KB
0 277
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

  • PID_P_V_tracking
    用PId控制算法,实现永磁直线电机的速度与位置的跟踪(With PId control algorithm to achieve the permanent magnet linear motor speed and position tracking)
    2021-03-18 10:29:20下载
    积分:1
  • mat_example
    平面梁单元计算两铰抛物线拱的自由振动特性 采用平面梁单元计算两铰抛物线拱的自由振动特性 (Plane beam element calculation of the free vibration characteristics of two hinged parabolic arch)
    2012-04-02 16:54:03下载
    积分:1
  • INCORPORATION-OF-D-FACTS-DEVICE-IN-DISTRIBUTION-S
    INCORPORATION OF D-FACTS DEVICE IN DISTRIBUTION SYSTEM FOR LOSS REDUCTION
    2014-01-30 14:20:30下载
    积分:1
  • powersys
    SimPowerSystems software and other products of the Physical Modeling product family work together with Simulink software to model electrical, mechanical, and control systems
    2009-07-13 23:34:21下载
    积分:1
  • LDP
    Local directional pattern has implemented to extract texture multi orientation
    2015-02-20 20:11:22下载
    积分:1
  • adaptivehuffman
    Encoding/Decoding for 1D arrays of 8 or 16bit unsigned integers
    2010-10-23 12:12:55下载
    积分:1
  • quadtree_imageseg
    在matlab环境下对图像进行四叉树分解,在此基础上对图像进行分析(In the matlab environment, an image quad-tree decomposition, in this based on image analysis)
    2010-03-06 19:54:57下载
    积分:1
  • bpnn
    MATLAB neural network backprop code This code implements the basic backpropagation of error learning algorithm. The network has tanh hidden neurons and a linear output neuron. adjust the learning rate with the slider
    2013-01-02 18:00:13下载
    积分:1
  • xunhuanma
    2FSk循环码 基于matlab的开发程序 检测误码率(2FSk cyclic code)
    2013-01-10 12:32:10下载
    积分:1
  • 2---Copy
    this is matlab code for the eye select
    2013-08-19 00:39:45下载
    积分:1
  • 696518资源总数
  • 106265会员总数
  • 10今日下载