Park, Sang Yong and Song, Buchun and Baek, Yoon Su (2021) A Theoretical Method for Designing Thin Wobble Motor Using an Electromagnetic Force and an Electropermanent Magnet for Application in Portable Electric Equipment. Applied Sciences, 11 (2). p. 881. ISSN 2076-3417
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Abstract
The thin wobble motors that are required to hold rating shafts employ an electropermanent magnet. This turns the holding force on and off by applying a momentary electrical pulse. To design the magnet devices without the need for finite element analyses, a theoretical force model is necessary for predicting the attractive force. In this paper, first, a force model is derived by estimating the permeance around the air gap. A magnetic circuit is constructed, employing a relatively simple method to build the model in clouding leakage flux. Thus, the basic structure and driving principle are also presented. Next, an analytical force model is constructed on the basis of distribution parameter analysis between the stator and the rotating shaft. The design of the electromagnet core and the control method are presented. Finally, a prototype model of the motor that is 30 mm in diameter and 7 mm in thick is fabricated. The two models are verified by comparing the results of FEM with the results of the experiments. They can properly predict the attractive force, so the thin wobble motor with holding force can be applied in portable electric equipment.
Item Type: | Article |
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Subjects: | Opene Prints > Engineering |
Depositing User: | Managing Editor |
Date Deposited: | 17 Jan 2023 07:14 |
Last Modified: | 25 May 2024 07:47 |
URI: | http://geographical.go2journals.com/id/eprint/803 |