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power_brushlessDCmotor
无刷直流电机控制模型 带霍尔检测模块 是MATLAB2008里自带的仿真实例 (Brushless DC motor control model with Hall detection module is built-in simulation examples where MATLAB2008)
- 2010-01-26 09:45:45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
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Binary-GA
it is binary ga algorithm in matlab
- 2013-07-09 16:56:36下载
- 积分:1
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track-red-matlab-algorithm
实时跟踪摄像头获取视频中的红色部分,算法由Matlab实现。计算机要有摄像头或连接USB摄像头,Matlab通过自身函数提取视频跟踪。
包含两个文件,word说明了matlab提取视频方法。m文件实现算法,其中摄像头参数部分代码可能视具体情况修改。(Get real-time tracking camera video in the red part of the algorithm by Matlab implementation. Computer must have a camera or connect a USB camera, Matlab function to extract the video track by itself. Contains two files, word describes a method to extract video matlab. m file algorithm, which camera parameters of the code, as the case may be modified.)
- 2015-03-03 11:34:33下载
- 积分:1
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SSC_OLTCregtransformer
Three-Phase On-Line Tap Changing Regulating Transformer .
- 2014-02-03 15:31:39下载
- 积分:1
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BP_net
说明: BP神经网络经典算法 用于故障检测案例 已经使用过 可放心使用(BP neural network classic algorithm used in fault detection cases It has been used and can be used safely)
- 2020-02-03 10:19:32下载
- 积分:1
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frequence5oo1
design cycloconverter 3/3 ph by simulink matlab
- 2011-07-18 02:23:08下载
- 积分:1
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ssrg
MATLAB实现的移位寄存器,可以很容易在网上找到框图,原理也很简单,适合初学者参考。(MATLAB implementation of the shift register, you can easily find online diagram, the principle is very simple, suitable for beginners reference.)
- 2013-07-25 21:06:30下载
- 积分:1
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ica_filter
ica_filter for signals matlab code
- 2013-12-04 22:58:06下载
- 积分:1
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matlab实现视频中动态目标跟踪
图片动态,对于动态目标进行跟踪,从而提取出来(Dynamic picture, dynamic target tracking, so as to extract)
- 2017-09-17 14:53:21下载
- 积分:1