锥型介电弹性体驱动器的性能研究

Research on the Properties of Dielectric Elastomer Cone Actuator

介电弹性体驱动器在机器人系统、医疗机械系统以及智能驱动系统方面已经显示出广泛的应用潜能,具有结构简单、质量轻、能量密度大、效率高、变形大的优点。采用3M VHB4910介电弹性体设计并制作了锥型介电弹性体驱动器,并进行了锥型驱动器的驱动实验。测得锥型驱动器在一个通断电过程中的力-位移曲线,并计算得到驱动器的差力为1.65 N。实验结果表明锥型驱动器在通电后可以较大的线性位移,面积变化率为15.49%,断电后又能较快地恢复初始位置。同时对驱动器在一个工作周期中的做功进行分析,指出锥型驱动器可以通过多层薄膜的叠加来提高输出功。

Dielectric Elastomer Actuators （DEAs） shows a wide application in the fields of robotics, medical machine systems and intelligent ectuatation. They have the advantages of simple structure, light weight, high energy density, good efficiency and large deformation. This paper introduces designing and manufacturing a dielectric elastomer cone actuator with VHB4910 from 3M, processing a actuation experiment of cone actuator, measuring the force-displacement curve of cone actuator when voltage is on and off, and calculating the force difference at 1.65 N. Experiment shows that a larger linear displacement can be obtained with a area variety ratio of 15.49%, actuator can retract to its original position when voltage is off. A lager force output can be provided by parallel connection of many actuation units through the analysis of work output of cone actuator in a workcycle.