Friction-induced-vibration

this is matlab code for estimating the static linear system(system function is time variable) with Recursive Least Squre and 2 solutions for better result. 1- using the Covariance Matrix Reseting in a specefic time. 2-using the RLS with Forget Factor this program is written by matlab 7.0. Here we want to estimate the below function: 1-u^2+(1+tansig(0.1*(t-375)))*u^3+u^5+3*u^7 finally,there are plots for showing results.

BFGS变尺度法，MATLAB实现，求解函数极值(BFGS variable metric algorithm implemented by MATLAB)

说明：  遗传算法的理论与讲解，还有部分代码设计与实现 相关遗传算法的改进也有详细的介绍(Theory and explain the genetic algorithm, part of the genetic code design and implementation of related algorithm is also introduced in detail)

matlab 无线传感器网络休眠仿真（基于邻居节点数量）(matlab simulation of wireless sensor network hibernation)

Hard Disk Drive Servo Systems

三次样条曲线拟和，能够很好的处理离散点的拟和问题，值得收藏(Cubic spline curve fitting and)

scattered parameter estimation matlab code

说明：  基于神经网络的PID源程序 可用于学习!!(PID based on neural networks can be used to study the source code!!)

使用Matlab 即可讀寫Excel檔案內容. 不要另外打開Excel 檔(Use Matlab to access contents of the Excel file. )

正弦波的LP建模 能显示原正弦波波形及它的频谱图，LP模型的频谱图，LP模型的极点图，LP模型的脉冲响应图。(This demonstration illustrates the modelling of a sinewave with an LP model The displays show the sinewave,it spectrum, the spectrum of the LP model,the poles of the LP model and the impuse response of the LP model.)