磁流变减振装置的自回归双谱分析

研制了磁流变减振器,它由可控减振装置、信号检测器、计算机磁流变阻尼器动态分析软件等组成.当零均值、非高斯的白噪声干扰装置时,利用采样实验数据建立自回归模型(AR模型).双谱是信号处理中一种新的、功能强的技术,它可以描述系统的非线性耦合,抑制高斯噪声和保留相位信息.这里用AR双谱研究磁流变振动装置的动态特性.研究表明,用AR双谱分析磁流变减振器是可行的,有效的.

Autoregressive bispectrum analysis of magnetorheological damping device

This paper presents a magnetorheological damping device is made up of a new amplitude controller,the signal collecting device,computer software for dynamic analysis,magnetorheological damper et al.When a zero mean and non-Gaussian white noise interferes with the device,a time series model,proposed as AR(autoregressive) model,is conducted by using the sampled experimental data.Bispectrum analysis is emerging as a new powerful technique in signal processing,which can describe nonlinear coupling,restrain Gaussian noise and reserve phase component.AR bispectrum are put forward for investigating the dynamic characteristics of the magnetorheological vibrant device.It is indicated that the AR bispectrum spectrum analysis methods are feasible and effective for investigation of magnetorheological vibrant device.