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A novel stick-slip based linear actuator using bi-directional motion of micropositioner

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Guo, Z., Tian, Yanling, Zhang, D., Wang, T. and Wu, M. (2019) A novel stick-slip based linear actuator using bi-directional motion of micropositioner. Mechanical Systems and Signal Processing, 128 . pp. 37-49. doi:10.1016/j.ymssp.2019.03.025

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Official URL: http://dx.doi.org/10.1016/j.ymssp.2019.03.025

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Abstract

A stick-slip based linear actuator was proposed in this paper, which applied the axial motion of the micropositioner to adjust the preload, and the lateral motion to drive the slider. The bi-directional motion of the micropositioner was realized through the asymmetric structure of a flexure-based mechanism, which includes two right circular flexure hinges and four leaf-spring flexure hinges. The static analysis, kinematic analysis and optimization design were successively implemented on the flexure-based mechanism. The Finite Element Analysis (FEA) proved the flexure-based mechanism could generate the bi-directional motion as designed. A prototype of the linear actuator was developed and the measuring system was constructed. A modified sawtooth wave with a cycloid fall curve was designed to improve the output property. The experimental results showed the modified sawtooth wave generated larger velocity than the traditional sawtooth wave in same driving voltages, fall times, driving frequencies and loads. The amplification coefficient and resolution of the proposed linear actuator in single step were 3.16 and 60 nm, respectively. The maximal velocity was 26.2 mm/s with the modified sawtooth wave in driving frequency of 500 Hz.

Item Type: Journal Article
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Actuators, Signal processing
Journal or Publication Title: Mechanical Systems and Signal Processing
Publisher: Academic Press
ISSN: 0888-3270
Official Date: 1 August 2019
Dates:
DateEvent
1 August 2019Published
29 March 2019Available
19 March 2019Accepted
Volume: 128
Page Range: pp. 37-49
DOI: 10.1016/j.ymssp.2019.03.025
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
51675371[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
51675367[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
51675376[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
734174H2020 European Research Councilhttp://dx.doi.org/10.13039/100010663
U1833106[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
U1833106Civil Aviation Administration of Chinahttp://dx.doi.org/10.13039/501100007538

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