shiermaibo2

face recogniton bASIS VERSION

The future 980 version of LS-DYNA will include Computational Fluid Dynamics (CFD) solvers. The main objective of these new solvers will be to perform fluid structure interactions by directly solving the Navier-Stokes equations and by using any LS-DYNA Lagrangian model for the solid part.

以齿轮系统动力学和非线性动力学理论为基础,针对齿轮系统时变啮合刚度和齿侧间隙耦合作用的具体特点,建立了齿轮系统非线性模型,并用数值积分和数值仿真方法对其在某些参数域中进行了非线性振动研究(Based on the dynamics of a gear system and the theory of nonlinear dynamics, co nsidering characteristics of coupling action of the time-varying mesh stiffness and the gear backlash, a model of the nonlinear gear system is developed. The nonlinear vibration is studied by using numerical integration method and numerical simulation in some parameter fields.)

移动最小二乘法（MLS）一维matlab计算程序，用于曲线拟合(Moving Least Squares (MLS) one-dimensional calculation matlab program for curve fitting)

Here i have attached zip file for noise removal using vector median filter

已知控制对象和目标函数，用粒子群算法对系统进行辨识的matlab程序。(Known control object and the objective function, particle swarm optimization (pso) algorithm for system identification of matlab program. )

检验已有的一组数据的概率分布是否为某种分布(Verify whether the data is a certain distribution)

本论文首先阐述了利用Duffing振子进行微弱信号检测的基本方法及具体实现方法，论证了根据系统相轨迹的变化来判断目标信号中是否含有周期信号的混沌振子检测方法。将Lyapunov特性指数作为一种定量的混沌判别方法应用到微弱信号混沌检测领域，分别研究了连续系统和时间序列的Lyapunov指数计算方法。(his paper first discusses how to use the Duffing oscillator are the weak signal detection, the basic method and the realization methods, proved according to the change of the phase track system to judge whether a cycle of target signal of chaotic oscillator signal detection methods. Will Lyapunov characteristics as a quantitative index of chaotic identifying method applied to a weak signal detection field chaos, respectively, the continuous system and research of time sequence Lyapunov index calculation method. )

matlab绘制三维Hilbert谱程序，保证可用。上传文件采用的是.txt形式，实际使用时只需要将后缀改为.m即可在matlab中运行。(matlab draw three-dimensional Hilbert spectrum procedures to ensure that available. Upload file uses a .txt form, the actual use of the suffix to .m only need to be run in matlab.)

常微分方程组的四阶RungeKutta龙格库塔法matlab实现(Fourth-order Runge-Kutta method matlab RungeKutta of ordinary differential equations to achieve)