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:
Mar. 03, 2015
Filed:
Mar. 08, 2011
Georg Bachmaier, München, DE;
Christian Bachmann, München, DE;
Dominik Bergmann, Sachsenkam, DE;
Tobias Glück, Vienna, AT;
Wolfgang Kemmetmüller, Vienna, AT;
Andreas Kugi, Vienna, AT;
Georg Bachmaier, München, DE;
Christian Bachmann, München, DE;
Dominik Bergmann, Sachsenkam, DE;
Tobias Glück, Vienna, AT;
Wolfgang Kemmetmüller, Vienna, AT;
Andreas Kugi, Vienna, AT;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
For an object on a bearing mounting having a magnetic bearing providing a magnetic field generally produced by an electromagnet, the bearing is regulated based on a position of the object relative to the bearing. The position of the object is determined by reference to an estimate of the inductance obtained using a least squares method, in which the electrical resistance of the bearing is taken into account. The resistance is subject to variations, for example due to temperature fluctuations; however, the electrical resistance can be estimated by regulating the inductance error, Δ{circumflex over (L)}={circumflex over (L)}−{circumflex over (L)}down to zero, where the resistance adjustment facility may be a low-pass filter and an integration controller.