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cx
说明: 在科学与工程计算中,经常遇到求解非线性方程组的问题;非线性方程组在收敛速度及收敛性比线性方程组要差,特别对于非凸的非线性方程组,其求解更是困难。下面简要介绍非线性方程组的三种解法——牛顿法、拟牛顿法、同伦算法,分析三种解法的适用性,并附Matlab原程序。(Scientific and engineering computing, often encounter the problem of solving nonlinear equations speed of convergence of nonlinear equations and linear equations worse than convergence, especially for non-convex nonlinear equations, which is even more difficult to solve . The following briefly describes three solutions to nonlinear equations- Newton method, quasi-Newton method, homotopy method, the applicability of the three solutions, along with Matlab original program.)
- 2016-03-12 10:57:01下载
- 积分:1
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nw
小世界网络邻接矩阵生成代码,可以基于此来实现人际网路(Small-world network adjacency matrix generated code can be implemented based on this interpersonal network)
- 2014-02-13 17:29:21下载
- 积分:1
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fft_base2
本程序用于实现快速傅里叶变换的快速算法
% 为代码简便所有*2操作均直接实现,实际应采用二进制左移实现
(This procedure used to realize fast Fourier transform fast algorithm of all the code is simple to operate* 2 are referred directly to realize the actual binary left should be used to achieve)
- 2008-05-17 10:59:43下载
- 积分:1
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fft
用DFT 函数计算电压u, 电流i的基波(f1=50 Hz)的有效值和相位;
用FFT函数分别计算电压u和电流i 所包含的直流,基波和谐波的有效值和初相角;
可计算基波(f1=50 Hz)和各次谐波的功率p和功率因数con?.(The effective value and phase of fundamental wave (f1 = 50 Hz) of voltage U and current I are calculated by DFT function.
The effective values and initial phase angles of DC, fundamental and harmonic waves contained in voltage U and current I are calculated by FFT function, respectively.
The power P and power factor con of fundamental wave (f1 = 50 Hz) and harmonics can be calculated.)
- 2019-03-28 15:48:19下载
- 积分:1
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1.21b
分数阶滑模工具箱,可用于解决阶次比较低的时候(fractional order sliding mode )
- 2016-10-10 09:37:28下载
- 积分:1
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fortran-files
文件1.f90:生成翼型naca0012的椭圆网格,并计算流场,给出壁面压力分布
文件2.f90:maccormack方法解一维burger s方程
文件3.f90:解一维laval管流动,其进出口均为亚音速,喉道后部有激波(File 1.f90: generate the airfoil naca0012 elliptical rotary cell, and calculate the flow field, given the wall pressure distribution file 2.f90: maccormack method to solve the burger' s equation, one-dimensional file 3.f90: solution of one-dimensional laval tube flow, its progress exports are subsonic, the back of the throat have shock)
- 2012-06-10 18:21:15下载
- 积分:1
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WilsonMethod
进行结构响应分析的Wilson法,是直接积分的基本算法之一,相信进行有限元动力分析编程的诸位都能用上(structural response analysis of Wilson, which is direct integration one of the basic algorithm, believe that the dynamic finite element analysis program you can use)
- 2006-07-09 11:15:54下载
- 积分:1
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WLS
用最小二乘法进行电力系统状态估计,包含IEEE30节点的电力系统图(Using least squares power system state estimation, including IEEE30 bus power system diagram)
- 2021-03-01 16:29:35下载
- 积分:1
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half-car
ANSYS中关于车桥耦合的接触法命令流,车辆模型为二分之一车(About the vehicle.the contact method in ANSYS command stream, with half vehicle model car)
- 2021-04-21 10:48:49下载
- 积分:1
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Gauss
数值分析中用C 语言验证验证Gauss列主元消去法。(Numerical analysis using the C language to verify verify the Gauss column principal component elimination.)
- 2013-03-25 21:11:32下载
- 积分:1