Study on the Centripetal Effect of a Magnetic Bearing

The conception of the centripetal effect of a magnetic bearing brings forward. And an experimental measurement method for the centripetal effect of a magnetic bearing is suggested. The existence of the centripetal effect of the magnetic bearing is convinced through the experiment and the value of centripetal effect is measured on a one-DOF magnetic suspending ball experimental device. The difference between the working condition of a magnetic bearing and the condition of ANSYS calculation is analyzed. The conclusion come the experimental measurement for centripetal effect can't be entirely substituted by ANSYS calculation, there some limitation on ANSYS calculation in the field of centripetal effect calculation of a magnetic bearing. The conclusion is convinced by an experiment on a magnetic suspended disk device. The related questions on how to use the centripetal effect in a magnetic bearing application system is discussed. A practical application system is presented as an example how to use the centripetal effect in a magnetic bearing application system. On the system a 5-DOF magnetic suspension is successfully realized, with 3-DOF is restricted by principal magnetic force and 2-DOF is restricted by centripetal effect of the magnetic bearing.