An Anisotropic Biomimetic Lemongrass Flexible Piezoelectric Actuator-Inhibitory Regression  

作　　者：Tianwei Liang Yunhong Liang Jiru Wang Hu Huang Zhi Xu Hongwei Zhao 

机构地区：[1]Key Laboratory of CNC Equipment Reliability,Ministry of Education,Jilin University,Changchun,130022,China [2]School of Mechanical and Aerospace Engineering,Jilin University,Changchun,130022,China [3]Institute of Structured and Architected Materials,Liaoning Academy of Materials,Shenyang,110167,China [4]The Key Laboratory of Bionic Engineering,Ministry of Education,Jilin University,Changchun,130025,China

出　　处：《Journal of Bionic Engineering》2024年第4期1817-1829,共13页仿生工程学报（英文版）

基　　金：supported by the National Science Fund for Distinguished Young Scholars(51925504);National major research instrument development projects(52227810);the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(52021003);the National Natural Science Foundation of China(52175271,52021003,52375287).

摘　　要：At present,the existing piezoelectric stick-slip actuators have an inherent back-slip problem,which greatly limits the development and application of stick-slip actuators.In order to inhibit the regression phenomenon,a new bionic lemongrass stickslip actuator was prepared by using polymer PDMS to replicate natural biological surface.The surface microstructure of the grass was copied by PDMS,and the PDMS film was prepared.The rigid and flexible bionic friction pair was further prepared,and the flexible anisotropic PDMS stick slip actuator was developed.It was found that the anisotropic friction characteristics of the surface microstructure of the grass inhibited the anti-sliding motion,and the elastic potential energy of the PDMS film improved the output characteristics of the driver.By adjusting the input voltage to control the contact between the drive foot and the rotor,the rigid and flexible hybrid drive can be realized and the backsliding phenomenon can be suppressed.The actuator is compact,lightweight and can achieve high speed and high resolution output without preloading force,which has important application value in the field of fast and accurate positioning with load limitation.

关 键 词：Piezoelectric actuator Bionic surface FRICTION Surface friction Flexible film 

分 类 号：Q811[生物学—生物工程]