Journal of Bionic Engineering ›› 2021, Vol. 18 ›› Issue (5): 1117-1125.doi: 10.1007/s42235-021-00081-0
A Novel Bionic Piezoelectric Actuator Based on the Walrus Motion
Jianping Li 1, Junjie Cai1, Nen Wan1, Yili Hu1, Jianming Wen1, Junwu Kan1, Song Chen1, Hongwei Zhao
- 1 Key Laboratory of Urban Rail Transit Intelligent Operation
and Maintenance Technology and Equipment of Zhejiang
Provincial, The Institute of Precision Machinery and Smart
Structure, College of Engineering , Zhejiang Normal
University , Jinhua 321004 , China
2 School of Mechanical and Aerospace Engineering , Jilin
University , Changchun 130025 , China
A Novel Bionic Piezoelectric Actuator Based on the Walrus Motion
Jianping Li 1, Junjie Cai1, Nen Wan1, Yili Hu1, Jianming Wen1, Junwu Kan1, Song Chen1, Hongwei Zhao#br#
- 1 Key Laboratory of Urban Rail Transit Intelligent Operation
and Maintenance Technology and Equipment of Zhejiang
Provincial, The Institute of Precision Machinery and Smart
Structure, College of Engineering , Zhejiang Normal
University , Jinhua 321004 , China
2 School of Mechanical and Aerospace Engineering , Jilin
University , Changchun 130025 , China
摘要： A novel bionic piezoelectric actuator based on the walrus motion to achieve high performance on large working stroke
for micro/nano positioning systems is fi rst proposed in this study. The structure of the proposed walrus type piezoelectric
actuator is described, and its motion principle is presented in details. An experimental system is set up to verify its feasibility and explore its working performances. Experimental results indicate that the proposed walrus type piezoelectric actuator could realize large working stroke with only one driving unit and one coupled clamping unit; the maximum stepping
displacement is Δ L max = 19.5 μm in the case that the frequency f = 1 Hz and the voltage U = 120 V; the maximum speed
V max = 2275.2 μm · s ?1 when the frequency f = 900 Hz and the voltage U = 120 V; the maximum vertical load m max = 350 g
while the voltage U = 120 V and the frequency f = 1 Hz. This study shows the feasibility of mimicking the bionic motion
of the real walrus animal to the design of piezoelectric actuators, which is hopeful for the real application of micro/nano
positioning systems to achieve large working stroke and high performance.