원통형 영구자석을 이용한 쌍안정 장치 설계Design of Bi-stable Mechanism Using Cylindrical Permanent Magnets

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Bi-stable mechanism is a system that has two different stable equilibrium positions within its range of motion. It has an ability to stay in two different positions without external power input and despite small disturbances. One of the most bi-stable applied mechanism is a morphing system, such as deployable structures, switch systems, and robot grippers. However, due to the complexity of mechanism and limitation of structure configuration, it is difficult to apply on a morphing system with rotating link mechanism. In this paper, an implementation method of rotational bi-stable mechanism using cylindrical permanent magnets is proposed. The magnetic field and the magnetic force were calculated from electromagnet model of the cylindrical permanent magnet. Based on the model, the force relation between two links containing the cylindrical permanent magnets was estimated. An array of cylindrical permanent magnets was selected for symmetric bi-stability, and an experiment on the link structure with the proposed bi-stable mechanism was performed to investigate the stability against a external torque.
Publisher
한국항공우주학회
Issue Date
2020-05
Language
Korean
Article Type
Article
Citation

한국항공우주학회지, v.48, no.5, pp.343 - 354

ISSN
1225-1348
DOI
10.5139/JKSAS.2020.48.5.343
URI
http://hdl.handle.net/10203/282040
Appears in Collection
AE-Journal Papers(저널논문)
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