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Study on a novel contact-free planar system using direct drive DC coils and permanent magnets

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2 Author(s)
Kwang Suk Jung ; Dept. of Mech. Eng., Yonsei Univ., Seoul, South Korea ; Yoon Su Baek

To cope with the severe specification such as a concurrent realization of high accuracy and wide operating range demanded in many fields, we suggest a contact-free planar system that realizes the spatial motion of a plate by generating a levitation force and a thrust force at the same plane concurrently. The system utilizes an interaction between the direct drive DC coils of a common shape and the permanent magnets with a coincident polar direction and, thus, it is very easy to implement and simple to quantify the magnetic interaction. We discuss a driving principle of the planar system including magnetic force generation mechanism, a framework for the force model, governing characteristics of the levitated plate and a planar motion control of the constructed prototype. The experimental results are given to verify the derived theoretical model and the feasibility of the system

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Mechatronics, IEEE/ASME Transactions on  (Volume:7 ,  Issue: 1 )