Anordnung fuer in einem Abstand von Schienen schwebend gefuehrte Elektromagnete

摘要

A carriage traveling along a track of magnetically permeable metal is supported at one or more points by electromagnets energized by a variable current to maintain a predetermined spacing between the magnet poles and the overlying track. This sdpacing is sensed by a control circuit which comprises a magneto-electric transducer including a permanent megnet juxtaposed with a Hall-effect generator which is located in the stray field of an associated electromagnet and whose output controls the energization of the latter, the two magnets being so poled as to create a negative-feedback effect stabilizing the operation of the control circuit.