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本文总结了matlab中常用的函数，并对其功能进行说明。(This paper summarizes the commonly used matlab functions, and explain its function.)

针对频率周期振荡的振动系统讨论自适应控制问题,在频率跟踪的基础上对频率变化的振动响应进行控 制,给出相应的估计、滤波与控制方法。首先在子空间辨识原理的基础上,通过测量信号自相关序列的递推运算获得信号 频率 然后根据估计频率实时调整带通滤波器的中心频率,使其跟踪信号频率,实现信号分量的跟踪滤波 最后在LMS方 法的基础上构造对信号分量进行控制的自适应控制器。(The adaptive vibration control of systems excited by forces of periodically varying frequencieswas dis- cussed. The presented adaptive controlwas realized on the basis of tracking of time-varying frequencies and amethod for online frequency estimation, filtering and controlwas proposed. Based on the principle of subspace identification, the time-varying frequencieswere estimated from the recursively computed autocorrelation ofmeasured signals. )

Low Pass Filter. it is used to find the low frequency components of the image. it gives the blurry image and removes noise

signals snr ratio by opertions

Matlab经典教程——从入门到精通详细的介绍了MATLAB的使用方法，是学习MATLAB必不可少的书籍(Classic Matlab Tutorial- from entry to the master detail the use of MATLAB is an essential book to learn MATLAB)

该工具箱包括了混沌时间序列分析与预测的常用方法,有: 产生混沌时间序列(chaotic time series) Logistic映射 - ChaosAttractorsMain_Logistic.m Henon映射 - ChaosAttractorsMain_Henon.m Lorenz吸引子 - ChaosAttractorsMain_Lorenz.m Duffing吸引子 - ChaosAttractorsMain_Duffing.m Duffing2吸引子 - ChaosAttractorsMain_Duffing2.m Rossler吸引子 - ChaosAttractorsMain_Rossler.m Chens吸引子 - ChaosAttractorsMain_Chens.m (The kit includes a chaotic time series analysis and prediction of commonly used methods are: generate chaotic time series (chaotic time series) Logistic map- ChaosAttractors Main_Logistic.m Henon map- ChaosAttractors Main_Henon.m Lorenz attractor- ChaosAttractors Main_Lorenz.m Duffing attractor- ChaosAttractors Main_Duffing.m Duffing2 attractor- ChaosAttractors Main_Duffing2.m Rossler attractor- ChaosAttractors Main_Rossler.m Chens attractor- ChaosAttractors Main_Chens.m)

包含了14段代码，主要是金融领域。包含了显性有限差分-期权定价、蒙特卡洛定价、风险中性期权定价等(Contains 14 sections of the code, mainly in the financial sector. Contains explicit finite difference- pricing, Monte Carlo pricing, risk-neutral pricing options)

mfile for Matlab Code 12.2 Calculates the GPC law

改程序实现了大尺度和小尺度衰落信道的模拟，可以通过改变载波、通信距离、阴影衰落标准差来观察信道容量的变化。(Change the program to achieve a large-scale and small-scale fading channel simulation, you can change the carrier, communication distance, shadow fading standard deviation to observe the changes in channel capacity.)

偏微分方程的MATLAB解法 对学习matlab环境下计算偏微分方程有很好的帮助。同时，也可以用其中的PDEOOL为计算流体力学中的二维问题生成三角形网格，减少前处理工作量(Solution of Partial Differential Equations MATLAB computing environment for learning matlab partial differential equations have a good help. Also, you can use one of the PDEOOL for the two-dimensional computational fluid dynamics problems in the triangular mesh generated, reduce the workload of pre-treatment)