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1下载:
本软件根据路面功率谱,采用ARMA模型给出车辆路面激励随机位移,能够根据不同车辆类型生成路面激励位移,车辆振动荷载。-software on the roads of the power spectrum, using ARMA model gives incentive road vehicles random displacement, According to generate different types of road vehicle incentive displacement,
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arma模型的功率谱估计代码。还包括系统的极零点分析等完整软件包。-arma model of the power spectrum estimation code. The system also includes a very complete analysis of 0.1 package.
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Accurate estimates of the autocorrelation or power spectrum can be obtained with a parametric model (AR, MA or ARMA). With automatic inference, not only the model parameters but also the model structure are determined from the data. It is assumed t
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分别用最小二乘法和svd-tls法对arma过程进行功率谱估计并比较结果。包含实验目的,步骤,程序,结果,分析。-Least square method, respectively, and svd-tls on arma-power spectrum estimation process and the results of the comparison. Contains experimental purposes, steps, procedures, results, analysis.
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matlab实现的AR功率谱估计,ARMA功率谱估计。-matlab realized AR power spectrum estimation, ARMA power spectrum estimation.
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自动谱分析:可用于丢失/采样/子束光谱分析;矢量自动迭代,可用于建模,故障诊断;-The applications of this additional toolbox are:
- Automatic spectral analysis for Irregular sampling/Missing data, analysis of spectral subbands,
- Vector Autoregressive modeling and Detection [uses ARMA
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实现一个ARMA模型的功率谱估计,实例中承载的是窄带信号,也可以改成宽带信号的-ARMA model to achieve a power spectrum estimation, the instance is hosted in narrow-band signals into a broadband signal can also be
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本方法采用的是宽带ARMA过程的谱估计用Welch法实现的,进行功率谱的仿真-This method uses a broadband ARMA spectral estimation process implemented by Welch method, the power spectrum of the simulation
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This on the power spectrum of the Matlab simulation program
#use ARMA, AR, MA model and cycle map for parameter estimation system-This is on the power spectrum of the Matlab simulation program
#use ARMA, AR, MA model and cycle map for parameter
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产生一个随机信号和两个不同频率但频率间隔很小的正弦信号,要求对两信号之和进行如下分析:
(1) 求该随机信号的自相关性系数、自相关函数,画出对应的图形;
(2) 利用不同的参数建模方法求出两个随机信号的功率谱;
(3) 利用极大似然估计、递推最小二乘法等常用的参数估计方法估计所建模型,包括AR模型、MA模型和ARMA模型的的参数,阶次自定;并与Matlab工具箱里的一些建模函数的运算结果进行比较;
(4) 利用陷波滤波和MUSIC滤波方法对该信号的频谱进行估计;
(5) 利
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输入信号为方波信号+高斯白噪声,方波信号基 频为1kHz,幅值为1,高斯白噪声方差为0.2, 均值为0,采样频率为20kHz。试用周期图法和 ARMA谱估计法(SVD-TLS)估计此信号的功率 谱,并分析比较其结果-The input signal is a square wave signal+ Gaussian white noise, square wave signal fundamental frequency 1kHz, amplitude is a Gaussian white n
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