Abstract
This paper proposes a magnetic suspension system using a permanent magnet (PM) and a rotary actuator. In this suspension system, the suspension force is controlled by a variable magnetic flux path mechanism where the flux path is cha nged by varying the angle of the PM. The PM is magnetized in radial direction and driven by a rotary actuator. This system can change the magnetic polarity of the stator and generate a very small suspension force through rotating the PM to some special angles. Since the fixed cores sustain the gravitational forc e of the suspended object and the rotary actuator has a larger reducer, this system also can generate a very big suspension force comparing with the input force. In this paper, first the prototyp e and the principle of this magnetic suspension system are explained. And in order to verify the proposed principle, the IEM (integral element method) analysis and basic experiments for magnetic flux density and attractive force are performed. The model i s created, and the numerical simulation is carried out. Final ly, suspension experiments are executed, and the results support our proposal.
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