2ASK1

设计一个数字FIR低通滤波器，其技术指标如下：Wp=0.2 Rp=0.25 Ws=0.3 As=50(Design a digital FIR low-pass filter, the technical indicators are as follows: Wp = 0.2 Rp = 0.25 Ws = 0.3 As = 50)

it is matlab code for produce signal

说明：  是关于通信仿真的几个程序，里面有调幅、调频等的仿真程序代码！(Communications simulation on several procedures, which has AM, FM, such as the simulation program code!)

电机模型，使用matlab语言。 在simulink环境下使用(Motor model, using the matlab language. Used in the simulink environment)

伪Wigner-Ville分布对实验采集外圈故障的振动信号进行分析，看出信号存在故障引起的冲击分量(The pseudo Wigner-Ville distribution is analyzed to the vibration signal of the outer ring fault, and the impact component caused by the signal is found.)

matlab小波分析程序，是信号处理的基础，计算十字叉丝的在不同距离的衍射图像。( matlab wavelet analysis program, Is the basis of the signal processing, Calculation crosshairs diffraction image at different distances.)

带Simth补偿的模糊PID控制器设计及仿真(Simth compensation with the fuzzy-pid controller design and simulation)

在MATLAB实现的用C实现的KNN算法，输入训练数据文件，和test文件，进行预测分类，并且可以与真实情况比较测试预测正确百分比(Implemented in MATLAB KNN algorithm implemented in C, the input training data file, and test files, to predict the classification and testing with the real situation is more correct percentage of predicted)

A major issue in computer network is to prevent important information being disclosed to illegal user.

1. 分别用2,3,4,5阶多项式来逼近[0,3]上的正弦函数sinx，并作出拟合曲线及sinx函数曲线线图。了解多项式的逼近程度和有效拟合区间随多项式的阶数有何变化。(1. Were treated with 2,3,4,5-order polynomial approximation [0,3] The sine function sinx, and make sinx function curve fitting curve and line graphs. Understand the degree of polynomial approximation and the effective range with the polynomial fitting order of any changes.)