EmFDTD-v1.2r1

求解转子系统前三个临界转速和主振型的传递矩阵法 (Calculation of critical speed)

Hilbert Haung spectrum

针对功放得到非线性失真，采用查表法预失真对功放的非线性进行补偿，仿真表明了补偿方式的有效性。(Obtained for nonlinear distortion amplifier, using the look-up table predistortion to compensate for non-linear power amplifier, simulation shows the effectiveness of compensation.)

一款Mie散射的计算软件，计算均匀球形粒子的光散射。(MiePlot offers the following mathematical models for the scattering of light by an homogeneous sphere: Mie theory、Debye series、Ray tracing (based on geometrical optics)、Rayleigh scattering 、Diffraction 、Surface waves)

说明：  最小二乘法估算三元二阶方程式系数，用于抛物线曲线拟合(Estimating coefficient of second order equation by least square method)

《高等计算力学》教材的源程序,非线性有限元计算程序(" Advanced Computational Mechanics" of the source material)

给出变量的上下边界、初值和代价函数，能够搜索代价函数最小值时的变量取值。属于带约束的优化算法，可以用来求算非线性方程组。(STRSCNE is a Matlab code for constrained nonlinear systems of equations F(x)=0 l<=x<=u where F: R^n--> R^n, l and u are vectors of dimension n. Non-existent lower and upper bounds, i.e. entries of l and u equal to minus o plus infinity, are allowed. The algorithm is a globally convergent procedure that combines Newton method and an elliptical trust-region approach. The elliptical trust-region is defined employing a scaling diagonal matrix D and the trust-region subproblem is approximately solved by the dogleg method. Only strictly feasible iterates are generated. Various input/output options are provided, and we refer to the code itself for further documentation. )

这是求多柔体转子纽马克法的程序。以拉格朗日方程为基础，结合有限元发计算(is seeking more flexible rotor Newmark Act procedures. To Lagrange equation, the FEM calculation)

泽尼克多项式来表示波前形状，此程序运用matlab求得泽尼克多项式系数( Searched: Entire Web Site Advanced Search Results 1 through 9 of 9 Zernike Polynomial Coefficients for a given Wavefront using Matrix Inversion in Matlab )

线接触滑块润滑，基于有限差分法，采用的是中间差分的方法，求解油膜厚度(Line contact slider lubrication, based on the finite difference method, using an intermediate difference method for solving film thickness)