dcl2

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.)

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)

说明：  用四阶Runge-Kutta法解延迟微分方程组，用到的朋友看一下啊(Using fourth-order Runge-Kutta method for delay differential equations, a friend used to look at ah)

matlab语言写的计算八木天线的程序，可以改变单元的数量，给出各个阵子的电流分布和方向图 (matlab language computing Yagi antenna program, you can change the number of units each time around given the current distribution and orientation map)

利用表达式求解和栈的只是，设计一个简易的数学题库， 可供小学生作业，并能给出分数。 要求：建立试题库文件，随机产生 n 个题目；题目涉及加减乘除，带括弧的混合运算；随时可以退出；保留历史分数，能回顾历史，给出与历史分数比较后的评价。(Use solving expressions and stack just design a simple math exam, students for the job, and can give a score. Requirements: Create test file, randomly generating n topics topics involving addition, subtraction with parentheses mixing operation ready to quit keep historical scores, can look back at history, and history is given uation scores after comparison.)

二维热传导扩散方程的高斯-赛德尔迭代方法。(A two-dimensional thermal diffusion problem using Gauss-Seidel iteration method.)

三维FDTD近远场变换程序,为时域近远场变换(three dimension FDTD near to far program)

用mfc实现计算器的基本操作，支持键盘输入，并保留xp风格,可计算平方，幂，时间显示等操作(With mfc achieve the basic operation of the calculator, support for keyboard input, and retain xp style, calculates the square, power, time display and other operations)

二阶精度的FDTD正演算法，可用于井间电磁波探测模拟(The accuracy of the second order FDTD are algorithm Can be used to detect simulation between Wells electromagnetic waves )

这是一个3维8节点计算弹性力学有限元的MATLAB程序： 1） 生成网格的程序，可以更改模型尺寸、单元数量等参数；2）可以 计算刚度矩阵、位移、应力等，并将结果保存；3）可以后处理程序显示结果；(This is a 3-D 8-node MATLAB program for calculating finite element of elasticity:1) mesh generation program, which can change the size of the model, the number of elements and other parameters; 2) stiffness matrix, displacement, stress and so on can be calculated, and the results can be saved; 3) the results can be displayed by post-processing program.)