电流变液与压电陶瓷复合的自耦合阻尼器

SELF-COUPLED DAMPERS COMPOSED OF ELECTRORHEOLOGICAL FLUIDS AND PIEZOELECTRIC CERAMICS

  • 摘要: 基于智能结构的思想,率先提出设计制作电流变液和压电陶瓷复合的自耦合阻尼器.相比于通常的电流变液阻尼器,该自耦合阻尼器采用压电陶瓷响应外界振动而输出高电压,激励电流变液体工作,从而省去了外加高压电源. 随外作用力变化,激励电流变液的压电陶瓷电压自动改变,阻尼器具有自适应的特征,省去了通常的计算机等控制系统. 研制的第1代电流变液/压电陶瓷阻尼器实现了自适应的控制过程,显示了良好的减振性能. 在第2代产品中采用了新的设计,提高了阻尼器的结构稳定性和可靠性,使阻尼器整体性能得到提高.

     

    Abstract: Based on the concept of intelligent structures, self-coupled damperscomposed of electrorheological (ER) fluids and piezoelectric ceramicsare proposed in this paper. Unlike the conventional ER dampers, theself-coupled dampers employ piezoelectric ceramics to respond theexternal vibration and to provide the electric field for solidification ofER fluids. With a change in the external vibration, the electric fieldchanges accordingly due to the piezoelectric ceramics, resulting in anadaptive control process. The self-coupled dampers have a simple and compactstructure since the high voltage supply and the control system are notinvolved.Two generation products of the self-coupled dampers have been manufactured.Several modifications have been included in the second generationself-coupled damper and both the stability and the reliability of the damperare improved.

     

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