-
ouhe
二自由度无阻尼振动的传统建模和解耦求解程序(Two degree of freedom undamped vibration of traditional modeling and decoupling solver)
- 2012-05-24 22:00:23下载
- 积分:1
-
sv_from_coe
把轨道根数转移到对应的状态向量,在轨道中很常用。(The orbital elements are transferred to the state vector)
- 2012-07-22 22:10:12下载
- 积分:1
-
ica_for_pid_design
ica for pid design project
- 2014-09-15 02:03:04下载
- 积分:1
-
DemoForCAAnimation
动画 uivie 大小变化 uiView的变化(Changes in the size of the animation uivie changes uiView)
- 2011-11-12 12:07:10下载
- 积分:1
-
cycle-slip-detection
一种基于easy代码,利用小波进行周跳探测的技术,内附实例。(Based on easy code, cycle slip detection using wavelet technology, enclosing instance.)
- 2013-09-04 09:34:48下载
- 积分:1
-
thebasisofmatlabandsimulink
matlab与simulink基础(南京理工大学)课件(the basis of matlab and simulink)
- 2010-09-28 00:07:56下载
- 积分:1
-
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
-
ESPRIT-algorithm
旋转空间不变法,是阵列信号处理中经典方法,高分辨率DOA估计(espirit algorithm is widely used in high resolution DOA estimation)
- 2013-01-16 23:30:56下载
- 积分:1
-
TP1
program which simulate potential method for the use of the navigation system with several cases
- 2013-09-30 18:12:09下载
- 积分:1
-
duffin
计算Duffing振子的lyapunov指数(calculation Duffing factors lyapunov exponent)
- 2017-10-17 00:26:49下载
- 积分:1