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matlabjf
对matlab编写的积分函数做了总结,包括各种积分函数和它的matlab程序。(The integral function on matlab to do the preparation of a summary, including a variety of integral function and its matlab program.)
- 2010-05-06 16:16:13下载
- 积分:1
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s_power_spectrum
to show power spectrum of seismic data
- 2012-07-31 19:15:29下载
- 积分:1
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guide
matlab程序,实现fir各种窗函数的滤波
iir各种类型的滤波(matlab procedures fir achieve a variety of window functions of various types of filtering IIR filtering)
- 2009-02-24 21:19:40下载
- 积分:1
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intentoconvolucion
this program does de graphic convolution of two signals in real time, it gives de value of the convolution
- 2009-12-21 04:51:12下载
- 积分:1
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PMUSIC
自适应滤波器中MUSIC算法的MATLAB程序·(Adaptive filter algorithm in the MATLAB program MUSIC)
- 2010-12-25 22:38:07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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stft
短时傅里叶中加各种不同类型的窗来观察窗的形状(Short-time Fourier and Canada all the different types of windows to observe the shape of the window)
- 2011-05-13 09:41:18下载
- 积分:1
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New-folder
This is the code for license plate recognition.
- 2013-03-03 20:04:03下载
- 积分:1
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code
遗传算法寻优寻优,(调用matlab自带函数)解决一般系统的参数设定问题。(Genetic algorithm optimization optimization (call matlab own functions) to solve the general system parameter setting.)
- 2012-11-10 21:48:54下载
- 积分:1
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boyipowernash
通过仿真表明,该算法同几种经典的分布式算法相比,不但降低了发送功率,提高了用户效用,而且有较好的收敛性能,适用于对时延特性要求较高。(Through the simulation shows that this algorithm with several classic distributed algorithm, not only reduce the sending power, improve the user utility, and has better convergence performance, suitable for time delay characteristic request is higher.
)
- 2012-10-04 11:02:55下载
- 积分:1