fig4

这是先进PID控制书中的源码，是基于matlab的。(This is the advanced PID control of the source book is based on the matlab.)

delcam soft crack,very good.

对信号进行短时傅里叶变换，可以方便的调节各种短时傅里叶变换的影响因素。(Short-time Fourier transform of the signal, you can easily adjust a variety of short-time Fourier transform of the influencing factors.)

一维光子晶体波导的传输特性曲线代码！非常好(One-dimensional photonic crystal waveguide transmission characteristic curve of code! Very good)

基于matlab的同步电机模型，可在仿真中用于模拟一侧电网进行仿真分析。参数登可调。(Synchronous motor model based on matlab, simulation can be used to simulate the side of the grid simulation and analysis. Board adjustable parameters.)

基于LQR方法的直线路径跟踪，输入为期望直线路径，输出为左右推进器控制命令(LQR method based on a linear path tracing, enter the desired straight path, the output is about propulsion control commands)

加权l1-极小恢复k块稀疏信号恢复，加的权重是多个，并且不相等。(Sparse signals recovered by the weighted l1-minination.)

说明：  使用MATLAB对MIMO系统进行辨识，其中有各种算法仿真算例，N4SID，针对多变量系统的一种识别算法(MOESP (Multivariable Output-Error State sPace) is a deterministic method to identify linear time invariant systems. The MOESP method developed by M. Verhaegen and P. Dewilde is based on the LQ decomposition of Hankel matrix formed from input-output data, where L is lower triangular and Q is orthogonal. A Singular Value Decomposition (SVD) can be performed on a block from the L (L22) matrix to obtain the system order and the extended observability matrix. From this matrix it is possible to estimate the matrices C and A of state-space model. The final step is to solve overdetermined linear equations using the least-squares method to calculate matrices B and D.)

采用simulink搭建的GMSK发射部分的模块结构(Simulink structures using the GMSK transmitter module structure)

求解legendre多项式的系数，N各点对应N阶legendre多项式，有N+1各多项式系数，采用递推公式，40阶后误差较大。(Solving legendre polynomials, N points corresponding to N-order legendre polynomial, there are N+1 coefficients of the polynomial, using recursive formulas, after the error of order 40 more.)