CCC

说明：  确定性系统中建立一个跟踪系统让稳态误差变成0 ( This script demonstrates designing a tracking system with feedback and gain compensation to bring steady-state error to 0 and a settling time of 2.5 seconds. The response to a unit step is simulated and plotted to compare the system before and after compensation. This uses the STEP function from the system id toolbox and also ODE45 function to compute the step response.)

2. 设 是窄带信号，定义 是在 区间上均匀分布的随机相位。 是寬带信号，它是一个零均值、方差为1的白噪音信号e(n)激励一个线性滤波器而产生，其差分方程为 。 1） 计算 和 各自的自相关函数，并画出其函数图形。根据此选择合适的延时，以实现谱线增强。 2） 产生一个 序列。选择合适的 值。让 通过谱线增强器。画出输出信号 和误差信号e(n)的波形，并分别与 和 比较。 (Computer Experiments: 1. Consider an AR process x(n) defined by the difference equation where v(n) is an additive white noise of zero mean and variance .The AR parameters and are both real valued: a) Calculate the noise variance such that the AR process x(n) has unit variance .Hence , generate different realization of the process x (n). b) Given the input x (n), an LMS filter of length M = 2 is used to estimate the unknown AR parameters and . The step size is assigned the value 0.05. Compute and plot the ensemble average curve of and by averaging the value of parameters and over an ensemble of 100 different realization of the filter. Calculate the time constant according to the experiment results and compare with the corresponded theoretical value. c) For one realization of the LMS filter, compute the prediction error And the two tap-weight errors and Using power spectral plots of , show that)

这是关于matlab编程的初稿，是学习matlab的入门材料。(This is the first draft of matlab programming, is to learn matlab introductory material.)

Duffing系统的时域谱图和相空间轨迹绘制，能够帮助初学者很好的理解典型非线性特征(duffing equation Phase plane trajectory)

说明：  实现复正弦的实部和虚部图像的MATLAB程序(Realization of complex sine and image of MATLAB)

用巴特沃斯法实现数字带通滤波器的设计,用matlab一步一步实现，以数字低通滤波器的设计为基础。(Apply butterworth to design DF.)

说明：  BUCK类型的DCDC变换器，经过调试效果良好，欢迎下载(BUCK types of DCDC converters, through commissioning works well, welcome to download)

DDS中的正余弦生成，初始相位相差90度，可自行改变输出频率(Cosine generation of DDS, the initial phase difference of 90 degrees, the output frequency can be changed on their own)

matlab调用c程序经典实例,详细注释了接口函数和参数的意义功能，并以实例的形式完成matlab对c程序的调用(a classic example of matlab calling C source codes)

FDTD算法编程，利用matlab软件。包含一维和二维情况(FDTD algorithm programming, using matlab software )