The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2001
Filed:
Aug. 26, 1999
Reto Schöb, Volketswil, CH;
Peter Jenckel, Zürich, CH;
Hans-Georg Reiter, Zürich, CH;
Lust Antriebstechnik GmbH, Lahnau, DE;
Abstract
A magnetic bearing apparatus for the journalling of a body (,), in particular of a rotor (,), comprises a stator (,) with a control winding (,) having at least three loops (,) for the production of a magnetic control field by means of which the position of the body (,) relative to the stator (,) can be regulated, with each loop (,) belonging to a different electrical phase, and a control device (,) which in a first operating mode supplies each loop (,) with in each case a phase current (Ia, Ib, Ic) or in each case a phase voltage (Ua, Ub, Uc) as a control parameter. Means are provided in order to regulate the control parameter for each loop (,) independently of the control parameter for the other loops (,) as well as a monitoring unit (,) which can switch the bearing apparatus into a second operating mode in which a reduced number of phases, which is at least two, produces the magnetic control field.