Control system for a magnetic levitation body

A method for controlling the position of a magnetically levitated body comprising the steps of:

• sensing the position of a levitated body by position sensors;
• and applying exciting currents to electromagnets in response to the sensed position by the position sensors to adjust the position of the body to a calculated central position;
• wherein the sensing step comprises detecting a first limiting position of the body in a first direction and detecting a second limiting position of the body in a second direction opposite the first direction, and the step of applying exciting currents to adjust the position comprises calculating a central position from the first and second limiting positions and applying exciting currents to the electromagnets to move the body into the calculated central position.

A system for controlling the position of a magnetically levitated body comprising:

• means for sensing position of a levitated body;
• electromagnets for maintaining a position of the body in response to exciting currents applied thereto;
• and means for adjusting the position of the body in response to the sensed position to adjust the position of the body to a calculated central position, wherein the means for sensing comprises means for detecting a first limiting position of the body in a first direction and means for detecting a second limiting position of the body in a second direction opposite the first direction, and wherein the means for adjusting the position comprises means for calculating a central position from the first and second limiting position and means for applying exciting currents to the electromagnets to move the body into the calculated central position.