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pll
设计的软件锁相环的例子,自己写的,根据原理编的(PLL design example of software that he wrote, according to the principle for the)
- 2009-06-18 10:22:23下载
- 积分:1
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mgsaolei
说明: 扫雷游戏源码,游戏可选择低级 中级 高级(Minesweeper source, the game can choose low-intermediate Advanced)
- 2011-02-24 06:44:06下载
- 积分:1
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MFILE556
这是一份有关matlab中文教材程序代码,希望通过此文件可以使大家更好的学习matlab。(This is a Chinese teaching materials about matlab code, hope that through this file can make everyone better learning matlab)
- 2013-08-28 01:11:32下载
- 积分:1
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多目标遗传算法
电力系统规划多目标遗传算法程序matlab程序(Multiobjective genetic algorithm)
- 2018-07-07 11:54:45下载
- 积分:1
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classification
灰度共生矩阵提取特征值,最近邻算法,进行纹理图像分类。creat_apprentissage用来训练样本,cooccurence是灰度共生矩阵提取特征值,knn是进行k最近邻算法,classif是纹理图像分类(coocurence matrix,using K nearest neighbor to classify textures images.)
- 2010-05-07 14:22:23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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幅度误差对MUSIC影响
说明: 从理论上介绍了MUSIC算法原理、分析了阵列幅度误差对MUSIC算法性能的影响(The principle of music algorithm is introduced in theory, and the influence of array amplitude error on the performance of music algorithm is analyzed)
- 2020-09-03 15:28:07下载
- 积分:1
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Bahram
number imgae processing on matlab for detecting numbers in images.
- 2012-12-29 16:59:32下载
- 积分:1
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chirp_pulse_chain
采样时间:1E-6秒
脉冲长度:200E-6秒(脉冲宽度=200个样本)
脉冲间隔:1E-3秒(脉冲周期=1000个样本)
初始频率啁啾:DC至200 kHz(目标频率)
扫描时间:200E-6(200个样本)
(Sample Time: 1e-6 sec
Pulse Length: 200e-6 sec (Pulse width=200 samples)
Pulse Interval: 1e-3 sec (Pulse period=1000 samples)
Chirp: DC (initial freq) to 200 kHz (target freq)
Sweep time: 200e-6 (200 samples))
- 2012-11-22 10:16:06下载
- 积分:1
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matlab5
说明: 这是一个用matlab辅助图像处理源代码(This is an assisted image processing using matlab source code)
- 2008-10-17 10:24:13下载
- 积分:1