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In this paper, a novel non- bearing motors. Theoretical studies show that the structure of the magnetic bearingless motor radial force and torque of the motor is decoupled from each other , but also because it is a permanent magnet rotor sheet structure , only two of the control rotor radial and rotational degrees of freedom DOF, the other three degrees of freedom are passive stability . These motors control mechanism is simple, low power consumption, no friction and other unique advantages , in the aerospace, high-speed rotating machinery , energy, life sciences and other fields have broad application prospects. This paper analyzes the inner rotor type bearingless permanent magnet motor flaky basic structure and working principle of the radial suspension force of this motor mathematical model , in-depth study of the mechanical structure and the motor windings wound its structural parameters selected . For flaky no bearing inner rotor type permanent magnet motor system requirements are bidirectional current-mode amplifier , the output current is necessary to I gt; 0 and want I lt; 0, so the author self- designed two -way amplifier , one is linear amplifier, one is the PWM switching amplifiers. On this basis, the design is complete flake no bearing inner rotor type permanent magnet motor system, electric control system , and the design , fabrication, assembly and commissioning of the inner rotor type bearingless permanent magnet motor flaky test rig , and finally studied experimentally the experimental results showed that: this design of the inner rotor type bearingless permanent magnet motor flaky good system performance can be stably suspended .
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