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zhuizong
已知点A、B,两者皆运动,计算B追上A的速度 matlab。(B zhui zong A, matlab.B zhui zong A, matlab.B zhui zong A, matlab.)
- 2010-06-03 15:31:38下载
- 积分:1
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MATLABprogramdesignbook
matlab的电子教程,帮助大家学习matlab(matlab electronic tutorials to help everyone learn matlab)
- 2008-05-21 21:15:00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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fdtd1Mur
极为实用的TM波一阶Mur吸收边界条件编程(very practical TM wave an order Mur absorbing boundary conditions Programming)
- 2007-06-13 17:16:03下载
- 积分:1
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YuYanTuXiangJiaoZheng
鱼眼透镜影像之变形校正。详细介绍了鱼眼图像畸变产生原理,校正方法。给出了MATLAB校正源代码。(Image of fisheye lens distortion correction. Details of the fish-eye image distortion resulting theory, calibration methods. MATLAB gives the correct source code.)
- 2011-11-23 22:42:50下载
- 积分:1
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MATLAB
contains OFDM technique and AWGN channel acts as noise
- 2014-01-26 13:29:48下载
- 积分:1
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compare_with_BLAST_STBC_STTC
比较BLAST_STBC_STTC三种空时编码方式性能(Comparison BLAST_STBC_STTC performance of three space-time coding)
- 2010-11-17 20:29:36下载
- 积分:1
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blind
WATEMARKING WITH BLIND EMBEDDING
- 2013-12-23 22:57:55下载
- 积分:1
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STR_for_pudn
通信中的采样钟恢复,用gardner 算法提取时钟误差。(STR for sampling Time recovery)
- 2013-11-24 16:18:29下载
- 积分:1
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DBF software
说明: 利用matlab实现的数字波束形成算法,适合初学者学习。(Implementation of Digital Beamforming Algorithms)
- 2019-02-19 17:00:16下载
- 积分:1