摘要
以介电弹性体材料为研究对象,设计一种集成传感功能的往复式直线驱动器。分析直线驱动器的工作原理,利用一个驱动单元的力行程曲线叠加构成直线式驱动器的工作特性曲线。建立介电弹性体驱动器的数学模型,利用数值解法计算出电压激励下介电弹性体驱动器的工作行程与输出力之间的关系,给出驱动器长度与工作行程的关系。同时给出驱动器工作过程中,介电弹性体薄膜内部的应力和应变分布情况,并给出驱动器不同工作位置的传感器电容值。试验结果与分析结果较好吻合,研究结果可以为介电弹性体驱动器的设计提供有力的支持。
An actuator of straight reciprocating with sensor integrated based on dielectric elastomer actuator was proposed. Working principle of linear actuator was analyzed and force-stoke curve of actuator was determined by combing force-stroke curves of two actuation unit. Moreover,mathematical model of actuator was presented,with which force output and working strokes of dielectric elastomer actuator,relationship between length of actuator and strokes of actuator and were explored. In addition,true stress,stretch ratio of dielectric elastomer membrane and capacitance of sensor at different position were all given. Experimental results agree well with the theoretical one,which demonstrate that this job can guide the design of dielectric elastomer actuator.
出处
《组合机床与自动化加工技术》
北大核心
2016年第8期5-8,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金资助项目(51305209)
江苏省自然科学基金资助项目(BK20130979
BK2011735)
中国博士后科学基金资助项目(2013M541678)
关键词
介电弹性体
驱动器
传感器
建模
dielectric elastomer
actuator
sensor
modeling
