yuyintezhengfenxi

NVH用7自由度模型，simulink，可重新设定参数(NVH model with seven degrees of freedom, simulink, can be re-set parameters)

this is code fore lms noice

利用粒子群优化算法实现两个变量求最大值，很实用的一个matlab程序(Particle Swarm Optimization)

求pp波和ps波反射系数。。。。。。。。。。。。。。。。(Seeking pp wave and ps wave reflection coefficient)

说明：  仿真入射到理想导体平板的情形，边界为PML吸收边界，观察电磁波反射过程(Simulate the case of incident to the ideal conductor plate, the boundary is PML absorption boundary, observe the electromagnetic wave reflection process)

已知一个LTI系统的差分方程为： y[n]-1.143*y[n-1]+0.4128*y[n-2]=0.0675*x[n]+0.1349*x[n-1]+0.0675*x[n-2] 初始条件y(-1)=1,y(-2)=2，输入x(n)=u(n)，计算系统的零输入响应 (known LTI system of a differential equation : y [n]-1.143* y [n-1] 0.4128* y [n-2] x = 0.0675* 0.1349 [n]* x [n-1] 0.0675* x [n-2] initial conditions y (1) = 1, y (2) = 2, input x (n) = u (n), we calculate the zero input response)

proram for k hold in matlab

在matlab下面，实现gps软件接收机的跟踪程序。(In matlab the following to achieve the tracking gps software receiver program.)

自动控制中的频域分析，可以看到系统的bode图、幅相特性(Frequency domain analysis of the automatic control system, can see the figure, Bode amplitude and phase characteristics)

说明：  harris角点检测的改进，高斯函数滤波，性能强筋。(Harris corner detection improvement，Gaussian function filtering, performance is strong muscle.)