Actuators | |
Design and Testing of a New Piezoelectric-Actuated Symmetric Compliant Microgripper | |
Zekui Lyu1  Qingsong Xu1  | |
[1] Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macau, China; | |
关键词: mircogripper; piezoelectric actuator; compliant mechanism; displacement amplifier; micromanipulation; | |
DOI : 10.3390/act11030077 | |
来源: DOAJ |
【 摘 要 】
Precise and stable operations in micromanipulation and microassembly require a high-performance microgripper. To improve the predominant static and dynamic characteristics, a novel piezoelectric-actuated compliant microgripper is designed, analyzed, and tested in this paper. The microgripper realizes a large gripping stroke by integrating a compliant bridge mechanism, an L-shaped mechanism, and a levered parallelogram mechanism. Optimization technology based on response surface analysis is applied to demonstrate the influence of structural parameters on the microgripper performance. Simulation results of finite element analysis reveal the superior performance of the designed microgripper in terms of gripping displacement, mechanism stiffness, equivalent stress, and natural frequency. A gripper prototype has been fabricated, and experimental studies have been conducted to test the microgripper’s physical properties. Experimental results show that the microgripper can grasp micro-objects with a maximum jaw motion stroke of 312.8
【 授权许可】
Unknown