Abstract
In this paper, a novel disk type permanent magnetic motor which can actively control five degrees of freedom (5-DOF) of rotor postures without any contact has been proposed. Hence, although it has similar structure with an original Axial-Gap Self-Bearing Motor (ASBM), other radial magnetic bearings and its shaft of the rotor can be removed. Moreover, the number of stator coils is minimized; therefore, the structure and control system of the motor are simplified. This paper illustrates the structure and control principle of the proposed motor, and then the electromagnetic characteristics calculated by three-dimensional magnetic field FEM analyses are shown. An experimental device whose dimensions was determined based on simulation results was manufactured and tests were carried out to demonstrate the feasibility of the proposed motor.
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