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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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35
说明： 四级四阶龙格库塔格式，求解微分方程的好算法。(Four fourth-order Runge-Kutta format, a good algorithm for solving differential equations.)
- 2010-07-07 11:33:03下载
- 积分：1
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FEMprogram
四面体网格划分的有限元计算源代码，在将变形体划分为四面体后，输入节点坐标，程序利用弹塑性本构，将载荷和位移关系转变为线性方程组，是一个很好的求解简单三维变形体的程序，还可输出单元变形量，应力等。(Tetrahedral mesh of the finite element method source code, in the deformed tetrahedron is divided into, the input node coordinates, the program using elastic-plastic constitutive, will be the relationship between load and displacement into linear equations, is a very good Solving a simple three-dimensional deformation body procedures, but also the output unit deformation, stress and so on.)
- 2020-12-16 11:59:12下载
- 积分：1
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常微分方程数值解法
常微分方程数值解法，又是一个数值分析的常用算法(Numerical Solution of ordinary differential equations, numerical analysis is a common algorithm)
- 2005-01-31 22:13:30下载
- 积分：1
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实验1
利用不动点迭代和牛顿迭代求解非线性方程解的理论(Theory of Solving Nonlinear Equations by Fixed Point Iteration and Newton Iteration)
- 2019-05-07 16:56:30下载
- 积分：1
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non_domination_sort_mod
说明： 带精英决策的多目标优化关键程序，希望对大家有用。(Key procedures of multiobjective optimization with elite decision)
- 2020-06-03 17:26:56下载
- 积分：1
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ART2100
一种借助lowtran7计算大气透过率和目标辐射的软件平台ART2100(A program that used for calculate air transferrate and object randience based on lowtran7)
- 2021-05-07 16:49:36下载
- 积分：1
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FEM_plane
有限元法计算平板受集中载荷的程序，二维四边形网格(finite element method concentrated load plate by the procedure, two-dimensional rectangular grid)
- 2007-05-29 14:35:35下载
- 积分：1
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3DDC
此代码属于地球物理领域，是用有限差分开发的直流电法三维正演，基于FORTRAN平台，此代码具有很高的运算效率，对于从事地球物理领域的人来说是不可多得的(This code belongs to the field of geophysics, is developed using finite difference method of three-dimensional forward modeling of DC, FORTRAN-based platform, this code has high computing efficiency, people engaged in geophysical field is rare)
- 2013-12-05 22:36:46下载
- 积分：1
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2d-multi-grid
说明： 二维笛卡尔坐标系下网格的划分，包括多重网格等。(Two-dimensional Cartesian coordinate system, the division of the grid, including the multi-grid and so on.)
- 2020-11-04 18:19:51下载
- 积分：1
