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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/24685

Title: Linear ultrasonic motor for absolute gravimeter
Authors: Jian, Yue
Yao, Zhiyuan
Silberschmidt, Vadim V.
Keywords: Linear ultrasonic motor
Absolute gravimeter
Clamping method
Issue Date: 2017
Publisher: © Elsevier
Citation: JIAN, Y., YAO, Z. and SILBERSCHMIDT, V.V., 2017. Linear ultrasonic motor for absolute gravimeter. Ultrasonics, 77, pp. 88–94.
Abstract: Thanks to their compactness and suitability for vacuum applications, linear ultrasonic motors are considered as substitutes for classical electromagnetic motors as driving elements in absolute gravimeters. Still, their application is prevented by relatively low power output. To overcome this limitation and provide better stability, a V-type linear ultrasonic motor with a new clamping method is proposed for a gravimeter. In this paper, a mechanical model of stators with flexible clamping components is suggested, according to a design criterion for clamps of linear ultrasonic motors. After that, an effect of tangential and normal rigidity of the clamping components on mechanical output is studied. It is followed by discussion of a new clamping method with sufficient tangential rigidity and a capability to facilitate pre-load. Additionally, a prototype of the motor with the proposed clamping method was fabricated and the performance tests in vertical direction were implemented. Experimental results show that the suggested motor has structural stability and high dynamic performance, such as no-load speed of 1.4 m/s and maximal thrust of 43 N, meeting the requirements for absolute gravimeters.
Description: This paper was accepted for publication in the journal Ultrasonics and the definitive published version is available at http://dx.doi.org/10.1016/j.ultras.2017.01.023
Sponsor: This work was supported by the following funding organizations in China: the program of National Science Foundation of China (grant Number 51275229); National Key Scientific Instrument and Equipment Development Project (grant Number 2012YQ100225); China Scholarship Council; and the Research Innovation Program for College Graduates of Jiangsu Province (grant Number KYLX15_0239).
Version: Accepted for publication
DOI: 10.1016/j.ultras.2017.01.023
URI: https://dspace.lboro.ac.uk/2134/24685
Publisher Link: http://dx.doi.org/10.1016/j.ultras.2017.01.023
ISSN: 0041-624X
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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