超弹性介电型EAP圆柱形驱动器变激励电压下动态响应分析

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (19) : 218-223.

论文

朱银龙1 ，王化明2 ，罗华安2, 3，周宏平1

作者信息 +

Research on the Dynamic Responses of Cylindrical Dielectric Elastomer Actuator Under the Varying Excitation Voltage#br#

ZHU Yinlong 1 , WANG Huaming 2 , LUO Huaan2,3, ZHOU Hongping1

Author information +

文章历史 +

摘要

超弹性电活性聚合物(electroactive polymer, EAP)圆柱形驱动器的动态特性是进行合理设计、使用及优化驱动器的重要依据。结合介电型EAP机电耦合方程，构建了驱动器轴向线性运动的动力学方程。通过计算得到驱动器的电压-轴向位移曲线，研究了驱动器在准静态点附近的稳定性。最后，分析了驱动器在施加阶跃和周期电压激励时的动态响应。结果表明，在有效工作范围内驱动器是稳定的，阶跃电压激励使驱动器在准静态点附近产生轴向振动，周期电压使驱动器产生包含自振的拟周期轴向振动。进一步分析表明，阶跃电压激励更易导致驱动器的电击穿失效

Abstract

The dynamic performance of a dielectric electroactive polymer (EAP) cylindrical actuator was the foundation for its reasonable design, operation and optimization. Combined with the dielectric EAP electromechanical coupling equation, the dynamic formulation for the axial linear movement of actuator was also deduced. The relation between the displacement of the cylindrical actuator and the applied voltage was obtained through numerical solution of the dynamic equation, and the stability around the quasi static point was analyzed. Finally, the dynamic responses to applied step and periodic voltage were studied. The results show that the actuator is stable in the effective working range, the sudden step voltage can result in the vibration around the quasi-static position in axial direction, and the sinusoidal voltage generates quasi-periodic vibration including natural oscillation. The further analysis reveals that the electric breakdown of actuator readily occurs when applied the sudden step actuation voltage.

导出引用

朱银龙1,王化明2,罗华安2, 3，周宏平1. 超弹性介电型EAP圆柱形驱动器变激励电压下动态响应分析[J]. 振动与冲击, 2015, 34(19): 218-223

ZHU Yinlong 1,WANG Huaming 2,LUO Huaan2,3, ZHOU Hongping1. Research on the Dynamic Responses of Cylindrical Dielectric Elastomer Actuator Under the Varying Excitation Voltage#br#[J]. Journal of Vibration and Shock, 2015, 34(19): 218-223

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