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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of Graduate School of Engineering, Nagasaki University > Volume 50, No. 94 >

電動機固定子の動吸振器・不均一質量・弾性支持による制振設計


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Title: 電動機固定子の動吸振器・不均一質量・弾性支持による制振設計
Other Titles: Vibration control design of motor stator using dynamic absorbers, imperfect mass and elastic supports
Authors: 吉武, 裕 / 南, 克樹 / 片原田, 浩之 / 山崎, 豪
Authors (alternative): Yoshitake, Yutaka / Minami, Katsuki / Kataharada, Hiroyuki / Yamasaki, Goh
Issue Date: Jan-2020
Publisher: 長崎大学大学院工学研究科 / Graduate School of Engineering, Nagasaki University
Citation: 長崎大学大学院工学研究科研究報告, 50(94), pp.36-41; 2020
Abstract: This paper deals with the quenching problem of electromagnetic vibration of the motor stator in the wide frequency region around the natural frequency. The iron stator is modeled by a perfect circular ring. To quench its vibration, single mass is set on the stator, it is supported by the two springs, and a pair of dynamic absorbers is installed on the outside of it. The solutions of forced vibration are obtained by the theoretical analysis. Following was made clear: (1) The vibration quenching effect may be improved by using an imperfect mass and spring supports in addition to the dynamic absorbers. (2) If an imperfect mass is set to be effective for cos mode and spring supports are set to be effective sin mode, and a pair of dynamic absorbers are installed as those makes the space which is almost same as the space between the loop and the node of the quenching target mode, higher quenching effect is obtained. (3) When the two dynamic vibration absorbers are optimally designed, the natural frequency ratios and the damping ratios are almost the same as when imperfect mass and elastic supports are not used.
Keywords: motor / inverter motor / forced vibration / imperfect mass / spring support / dynamic absorber
URI: http://hdl.handle.net/10069/39642
ISSN: 18805574
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 50, No. 94

Citable URI : http://hdl.handle.net/10069/39642

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