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利用小波变换在汽车变速齿轮点蚀故障诊断的应用(Wavelet transform automotive transmission gears pitting fault diagnosis in the application)

Finite elements analysis for a beam with three joints

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通过最速下降算法研究基于梯度的自适应方法，最速下降是递归的，滤波器计算是一步步迭代进行(through the steepest descent gradient algorithm based on the adaptive method, the steepest decline is recursive, Filter is an iterative step by step)

This Matlab Code models a Rayleigh fading channel using a modified Jakes channel model. A modified Jakes model chooses slightly different spacings for the scatterers and scales their waveforms using Walsh–Hadamard sequences to ensure zero cross-correlation. alpha_n = frac{pi(n-0.5)}{2M} and eta_n = frac{pi n}{M}, results in the following model, usually termed the Dent model or the modified Jakes model: R(t,k) = sqrt{frac{2}{M}} sum_{n=1}^{M} A_k(n)left( cos{eta_n} + jsin{eta_n} ight)cos{left(2pi f_d t cos{alpha_n} + heta_{n} ight)}. The weighting functions A_k(n) are the kth Walsh–Hadamard sequence in n. Since these have zero cross-correlation by design, this model results in uncorrelated waveforms. The phases ,! heta_{n} are initialized randomly and have no effect on the correlation properties. Matlab fast Walsh-Hadamard transform function is used to efficiently generate samples using this model.

this code is about Band pass filter.

用matlab编写的用中心差分法求解二自由度问题(Prepared using matlab central difference method with two degrees of freedom problem)

Least Square - ARMA 算法的MATLAB代码, 是频谱分析(通常是在高级DSP这门课中会用到的)的常用算法(Least Square-ARMA algorithm MATLAB code, Analysis of the spectrum (usually at the senior DSP This class will be used) to the commonly used algorithm)

位移约束下，利用ESO方法进行连续体结构拓扑优化(ESO method-based topology optimization of the continuous structure under the constraint of displacement)

两带随机参量的复指数信号之和，用MVDR进行信号频率谱估计。(Two of the sum of complex exponential signal with random parameters, the MVDR is used to estimate signal frequency spectrum.)