Test Bench Construction for the Validation of Rotor Position Measurement in Magnetic Bearings

At LAI, a micro bearingless motor system is being developed, in collaboration with a Swiss company. For proper commissioning, the radial position of the rotor must be continually measured and corrected, so that the rotor can ultimately spin with no contact. Still, the magnetic fields of the rotor contain not only information of its radial position, but also of its axial displacement and tilting. A mathematical model has been developed, and a position measurement PCB has been constructed, aiming to verify this model. The objective of this work is to construct a test bench that enables to test the model not only in terms of radial displacement, but of tilting and axial displacement, which can definite be of use for the commissioning as ventilator of the motor.