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GA
遗传算法;使用遗传算法进行图片分割,在基于内容的图像搜索上有可能用到。
- 2010-01-26 20:42:44下载
- 积分:1
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BPSK
利用Matlab软件,建立BPSK基带传输系统,比较AWGAWGNN和Rayleigh信道下的系统BER性能(Matlab software, the establishment of BPSK baseband transmission system, the system BER performance comparison AWGAWGNN and Rayleigh fading channels)
- 2015-01-08 22:34:08下载
- 积分:1
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C-C
C-C方法用于计算相空间重构的参数,有注释(CC method is used to calculate the phase space reconstruction parameters comment)
- 2021-04-06 14:59:02下载
- 积分:1
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Fcmeer
算法FCM代码,具有一定的实用性,使用时请按要求修改(FCM algorithm code, is practical, please modify as required)
- 2015-01-26 19:45:55下载
- 积分:1
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feng
lpc语音信号合成,给出了完整的LPC matlab程序,包括语音信号采集,LP预测系数(failed to translate)
- 2021-03-17 13:09:21下载
- 积分:1
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li5_13
此代码为图像处理技术中的沃尔什-哈达玛变换,实现图像的压缩处理(This code is an image processing technology Walsh- Hadamard transform, image compression)
- 2021-04-21 20:58:49下载
- 积分:1
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Image-space-domain-proscess
上海交通大学 图像空间域处理 matlab实现 灰度处理 直方图处理 等(Shanghai Jiaotong University image space domain processing matlab gradation processing histogram processing)
- 2012-11-25 19:33:44下载
- 积分:1
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Photovoltaic-grid
基于Matlab光伏发电包含光伏模型(含MPPT算法)和并网电路(Photovoltaic grid)
- 2012-12-27 11:02:42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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AVI2Images
AVI2Images 读取指定的AVI视频文件,并把视频帧依次写入图像文件。(AVI2Images reads the specified AVI video files and write video frames to the image files in order.)
- 2013-10-06 08:56:19下载
- 积分:1