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In some high performance applications, such as high speed rotating machinery, systems where access for maintenance is limited, or operating environments with extreme temperatures and pressures, motors without mechanical bearings would be preferred. This paper presents the theory, simulation, and lab results of a new type of fully magnetically levitated bearingless motor. The motors are wound without...
This paper develops a PWM based position sensing method for motion control of active magnetic bearings. A practical method to determine the rotor position in terms of rotor-stator magnetic properties was investigated. An analog signal processing circuit which conditions the PWM voltage and current signals is used to implement the method. Analog biquad band pass filters, as well as low pass filters,...
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