Study on the vibration displacement distribution of a circular ultrasonic motor stator

•We present a theoretical model of the displacement distribution of a circular stator.•We construct an USM with the circular stator and a holographic interferometry system.•We conducted measurements by the holographic interferometer and a laser vibrometer.•We estimated the displacement distribution...

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Bibliographic Details
Published inUltrasonics Vol. 59; pp. 59 - 63
Main Authors Ri, Chol-Su, Kim, Myong-Jin, Kim, Chol-Su, Im, Song-Jin
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 01.05.2015
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Summary:•We present a theoretical model of the displacement distribution of a circular stator.•We construct an USM with the circular stator and a holographic interferometry system.•We conducted measurements by the holographic interferometer and a laser vibrometer.•We estimated the displacement distribution by a numerical simulation (FEA).•All the results agree with each other within the range of a few percent. In this paper is presented a theoretical consideration on the stator’s displacement distribution, which is one of the most important problems in defining the structure of a circular ultrasonic motor stator. The results are compared with ones obtained utilizing a holographic interferometer, a laser vibrometer and FEM (finite element method) simulation. They are in good agreement with each other.
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content type line 23
ISSN:0041-624X
1874-9968
DOI:10.1016/j.ultras.2015.01.010