Design of a rhombus-type stick-slip actuator with two driving modes for micropositioning

被引：37

作者：

Shi, Beichao ^{[1
]}

Wang, Fujun ^{[1
]}

Huo, Zhichen ^{[1
]}

Tian, Yanling ^{[1
]}

Zhao, Xiaolu ^{[1
]}

Zhang, Dawei ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mech Engn, Key Lab Mech Theory & Equipment Design, Minist Educ, Tianjin 300354, Peoples R China

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2022年 / 166卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Stick-slip actuator; Lateral motion; Symmetric structure; Rhombus-type displacement amplification  mechanism; Double driving foot actuating method; DRIVEN; STAGE;

D O I：

10.1016/j.ymssp.2021.108421

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper proposes a novel liner stick-slip actuator with compact structure which can achieve forward and backward motion. A novel rhombus-type displacement amplification mechanism (RTDAM) with symmetric structure is used to generate lateral motion to improve the actuator performance. Theoretical analysis and finite element analysis (FEA) are carried out to calculate the coupling ratio and natural frequency of the system. In addition, a new driving method in which two driving feet act together is proposed, which can improve the load capacity of the actuator. A prototype is fabricated and experimental tests are conducted to investigate its performance. The results indicate that the maximum speed of forward and backward motion are 428.5 mu m/s and 443.2 mu m/s, respectively. Compared with the single foot driving method, the load capacity of the actuator is increased from 1.2 N to 1.6 N by adopting the new driving method. Finally, a micropositioning stage is built utilizing the proposed stick-slip actuator and the experimental results indicate that the stage can work stably.

引用

页数：12