Patent ID: 8360999

Claim:
A magnetic levitation vibration system, comprising: a top plate having a top surface and a bottom surface; a base plate located under the top plate and having a top surface and a bottom surface, the top surface of the base plate facing the bottom surface of the top plate; at least one first magnet fixed on the bottom surface of the top plate; at least one second magnet fixed on the top surface of the base plate in alignment with the first magnet with an equivalent polarity facing the first magnet to maintain a repulsive force between the first and second magnets, whereby the first and second magnets levitate the top plate during vibration thereof; at least one electromagnetic actuator comprising an upper half fixed on the bottom surface of the top plate and a lower half fixed on the top surface of the base plate in alignment with the upper half, whereby the electromagnetic actuator provides a vibrating force for the top plate independent from the first and second magnets during vibration of the top plate; a controller configured to adjust a frequency of vibration of the top plate; a sensor configured to monitor a magnitude of vibration of the top plate during vibration thereof to generate monitored signals; and a control circuit electrically connected to the lower half of the actuator and configured to adjust the magnitude of vibration of the top plate in real time or periodically during vibration of the top plate in response to the monitored signals.