An Experimental Method to Determine Circumferential Chamfered Position for a Langevin-Type Stator

Rui Xia Wang; Long Jin; Zhi Ke Xu; Min Qiang Hu

doi:10.4028/www.scientific.net/AMM.325-326.467

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 325-326An Experimental Method to Determine...

An Experimental Method to Determine Circumferential Chamfered Position for a Langevin-Type Stator

Abstract:

A langevin-type ultrasonic motor works using two orthogonal bending vibration modes. However, due to the influence of machining error, heterogeneous materials, especially the screw stress unevenness along the circumferential direction, the modal frequencies of two vibration modes are different, which will affect motor performance. Earlier research only deals with the axial position to chamfer to reduce the frequency difference, and think vibration direction consistent with excitation direction. While experimental results show that these two directions are generally different. By using Finite Element Method (FEM), a square-base stator is simulated, and the relationship is obtained qualitatively between the extreme value amplitude point and the extreme value bending moment of inertia of the stator. At last, an experimental method is presented to determine the maximum vibration amplitude position of a cylinder ultrasonic motor when the excitation angle changes in the range (-90,90].

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Periodical:

Applied Mechanics and Materials (Volumes 325-326)

Pages:

467-471

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.325-326.467

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Online since:

June 2013

Authors:

Rui Xia Wang, Long Jin, Zhi Ke Xu, Min Qiang Hu

Keywords:

Finite Element Method (FEM), Frequency Difference, Langevin, Ultrasonic Motor

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