文献类型：期刊文献

英文题名：Modeling the viscoelastic creep of the cylindrical dielectric elastomer actuator

作者：TuanDung Nguyen[1];Li, Jin[1];Sun, Lijie[1];Zhang, Yao[1];DanhQuang Tran[1];Xuan, Fuzhen[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：128

期号：3

外文期刊名：APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING

收录：;EI(收录号：20221011741156);WOS:【SCI-EXPANDED(收录号:WOS:000761507300003)】；

基金：This work was supported by the National Natural Science Foundation of China under Grant No. 52075172 and the Natural Science Foundation of Shanghai, Grant No. 19ZR1413300.

语种：英文

外文关键词：Cylindrical dielectric elastomer actuator; Electromechanical coupling; Creeping; Viscoelasticity; Soft robotics

摘要：Cylindrical dielectric elastomer actuator (CDEA) is known as an effective type of dielectric elastomer actuators. Owing to the advantageous properties of compact structure, CDEA has shown promising potential application in the development of the soft robotics. However, the inherent nonlinear viscoelasticity of dielectric elastomers causes the strain of actuators to change with time. This feature of CDEA is challenging to modeling and control of DE actuator and may limit their motion accuracy in practical applications. In this paper, to accurately describe the time-dependent nonlinear viscoelasticity properties of the actuator, by combining the advantages of the Kelvin-Voigt model and the Generalized Maxwell, a generalized combination model is proposed. The comparisons between the model prediction and experimental results demonstrate that the proposed model can accurately predict the response of the actuator under step voltage excitation, and the minimum prediction error can be achieved by 1.97%. This research results can provide theoretical guidance for the design of CDEA and is helpful to reduce the creep effect and improve the control efficiency of the CDEA.