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VSB信号仿真，做这个的很少.对VSB信号进行仿真，有调制和解调并加噪声过信道。(signal vsb by matlab,few people did this ever.)

lms滤波器的matlab源代码，可以实现变步长仿真效果！(LMS filter Matlab source code, change can be achieved step simulation results!)

LMS algorith and DE in matlab

说明：  從三角求和公式到Fourier 級數,推导很详细(From the Triangle to the Fourier series summation formula, derived in great detail)

液压控制系统中 一个非常典型的比例减压阀matlabsimulink模型 (Hydraulic control system in a very typical proportional pressure reducing valve matlabsimulink model)

算是一个小小的教程，交给初学者如何使用matlab，进行聚类分析，里边包含源码及示例。(Is a small tutorial to the beginners how to use Matlab, cluster analysis, and the inside contains the source code and examples.)

光子晶体的能带图计算，其实质就是电磁本征值（复矢量场）的问题。利用平面波展开磁场，引入f(r)=1/eps(r)，再利用倒格矢G将f(r)展开，将两者代入光子晶体的支配方程，最后得到一个平面波展开的方法的线性方程组，最终转化为求解其特征值向量的问题。(Energy band diagram of the photonic crystal, its essence is the electromagnetic eigenvalues ​ ​ (complex vector field).The linear plane wave expansion magnetic field, the introduction of f (r) = 1/eps (r), re-use reciprocal lattice vector G will expand f (r), the two substituted into the governing equations of the photonic crystal, and finally get a plane wave expansionequations, and ultimately into solving the problem of its eigenvalues​ ​ .)

说明：  PI调节器参数的直流双闭环仿真程序，参数需要调节，网友学习交流matlab程序代码(DC PI regulator parameter double loop simulation program, the parameter adjustment is required, users learn communication matlab code)

描述黑体辐射规律，绘制普朗克函数曲线和韦恩定律(Description blackbody radiation law, drawing Planck function curve and Wayne law)

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