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| 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 |
1. College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037;
2. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016;
3. Institute of Mechanical and Electrical Engineering, Nanjing College of Information Technology, Nanjing 210023 |
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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.
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Received: 12 August 2014
Published: 15 October 2015
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