摘要
研制了磁流变振动台,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。当有零均值、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),并用AR双谱和重构功率谱研究了磁流变振动装置的动态特性。研究表明,用AR双谱分析磁流变振动装置是可行的,有效的。
The configurations of magnetorheological vibrant platform was presented, which is made up of controllable vibrant producing device, signal collecting device, computer software for dynamic analysis, magnetorheological damper etc.. When a zero mean and non - Gaussian white noise interferes with the device, a time series model, proposed as AR （autoregressive） model, was conducted by using the sampled experimental data. AR bispectrum was put forward for investigating the dynamic characteristics of the magnetorheologieal oscillating device. It is indicated that the AR bispectrum spectrum analysis methods are feasible and effective for investigation of magnetorheological vibrant device.
出处
《机床与液压》
北大核心
2006年第7期67-70,共4页
Machine Tool & Hydraulics
基金
福建省高新技术开发研究计划重点项目(2005H035)
关键词
磁流变流体
阻尼器
振动
自回归模型
双谱
Magnetorheological fluids
Damper
Vibration
Autoregressive model
Bispectrum
