butterfilter

轴承外圈故障仿真的信号，简单实用，欢迎朋友提供内圈，滚动体，保持架仿真信号！(Signal of Bearing Outer Ring Fault Simulation)

This model simulates and visualize an airforce flight, shwing its rotation in three dimensional representation

femto cells matlab code

说明：  基于巴特沃思滤波器的50Hz工频险波器,程序给出了滤波器系数并且作了频谱分析(Butterworth filter based on the frequency of 50Hz- risk devices, procedures given the filter coefficient and made spectrum analysis)

说明：  viterbi算法在matlab环境下的具体实现程序。(viterbi algorithm matlab environment in the concrete realization of the procedure.)

说明：  求解一般线性无约束最优化问题的qp算法程序(Solving the general linear unconstrained optimization algorithm QP procedures)

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说明：  非线性系统的C-C算法,程序运行良好,能为从事混沌方面研究的人员提供一定的便利.(Nonlinear Systems C-C algorithms, running good, to engage in research in the chaotic provide certain facilities.)

Newton-Raphson method for all real roots of the polynomial 计算多项式实根的Newton-Raphson算法源代码(nonlinear fitting)

主程序arma2Ddemo是对模拟图像的2DAR和ARMA参数估计。(arma2Ddemo: See and run the demo arma2Ddemo for an example of 2D AR and ARMA parameters estimation from simulated images. - sim_ar2d: generation of simulated 2D AR process. - sim_arma2d: generation of simulated 2D ARMA process. - ar2d: solves 2D yule walker to estimate AR parameters - arma2d: estimation of 2D ARMA parameters. First step: estimation of the gaussian input by inv_ar2d, Second step: linear system solution to estimates simultaneously AR and MA parameters, as explained in [1]. - inv_ar2d: first step in arma2d. Filters through inverse filter 1/AR an AR process, to generate its innovation Gaussian signal. It is used here to estimate the Gaussian noise input to the ARMA 2D process, approximating the ARMA model to a high order AR model. - poles2coeff: converts poles chosen by user to AR or MA coefficients (support function) )