压电固体作动筒的应用基础研究

The Fundamental Research on Piezoelectric Actuator Stacks

通过对大位移压电固体作动筒的动力学模型的研究．探讨了压电固体作动筒在振动控制中的动力学驱动模型。通过对压电作动筒和结构之间的驱动传递关系的研究，以及在结构应用中获得达到最大的位移输出和最大的作用力的匹配关系的研究，为驱动器的一体化应用提供基础。最后研究了压电作动筒驱动力及输出位移，同时在不同的频率及负载下，对压电作动筒的驱动性能进行了实验，并进行讨论。结论表明：利用压电作动筒作为智能结构驱动器件，可以实现对结构的主动变形及振动控制。

Through the study of actuator model of PZT ISA (Piezoelectric induced Strain Actuator)and the matching property between the PZT ISA and the structure,some result.call be obtained for its application. An optimized model of the PZT ISA and the structure was proposed,through which the maximum actuator force and maximum induced strain can be obtained' This work provided a novel and fundamental theoretical research for the application of the PZT ISA. At the end,for the aim of real application in structures,a model of the stack with a mechanical displacement amplifier was made' At the same time,the actuator properties under the different load and different frequency are studied and discussed' The results revealed that the PZT ISA could satisfy the need of the driven properties for active vibration and distortion control.