磁流变弹性体隔振器隔振控制与实验研究

Vibration isolation control and an experimental study of magnetorheological elastomer isolators

为了更好地对磁流变弹性体隔振器的隔振性能及其控制策略进行研究。通过基于扫频激励的实验测试了磁流变弹性体隔振器的移频特性,证明了磁流变弹性体隔振器具有较宽的移频范围。基于磁流变弹性体隔振器的移频特性,提出了针对扫频激励的on-off控制策略。使用了基于变阻尼、变刚度的on-off控制策略,并将其应用于简谐激励和随机激励。通过实验研究证明,在控制策略的控制下,磁流变弹性体隔振器对于不同的激励形式都有着很好的隔振效果。该研究可以为磁流变弹性体隔振器的工程应用奠定基础。

In order to study the vibration isolation performance and control strategy of a magnetorheological elastomer isolator.The frequency shift characteristic of a magnetorheological elastomer isolator was tested by experiments based on sweep excitation.It is proved that the magnetorheological elastomer isolator possesses a wide frequency shift range.Based on the frequency shift characteristic curve of the magnetorheological elastomer isolator,an on-off control strategy for sweeping excitation was proposed.The on-off control strategy based on variable damping and stiffness was applied to harmonic and random excitation.The experimental results prove that the magnetorheological elastomer isolator has great vibration isolation effect for different forms of excitation under control strategy.The above works lay a foundation for the engineering application of magnetorheological elastomer isolators.