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:
Sep. 30, 2008
Filed:
Jun. 01, 2005
Alan Palazzolo, College Station, TX (US);
Ming-hsiu LI, College Station, TX (US);
Andrew Kenny, College Station, TX (US);
Jason Pruess, Brenham, TX (US);
Randall P. Tucker, College Station, TX (US);
Andrew Provenza, Avon, OH (US);
Raymond Beach, North Olmstead, OH (US);
Albert Kascak, Bay Village, OH (US);
Alan Palazzolo, College Station, TX (US);
Ming-Hsiu Li, College Station, TX (US);
Andrew Kenny, College Station, TX (US);
Jason Pruess, Brenham, TX (US);
Randall P. Tucker, College Station, TX (US);
Andrew Provenza, Avon, OH (US);
Raymond Beach, North Olmstead, OH (US);
Albert Kascak, Bay Village, OH (US);
The Texas A&M University System, College Station, TX (US);
Abstract
A magnetic bearing for supporting a spinning shaft in the radial direction and/or the axial direction includes a rotor formed on the shaft and a stator positioned around the rotor. Poles in the stator creates a magnetic field that supports the rotor. The number of poles is at least sufficient to produce a selected control force if there is an at least partial loss of current to one or more of the poles. The bearing also includes a set of permanent magnetic elements associated with the poles that create a homopolar, bias magnetic field. A controller connected to the poles is programmed with instructions to change the current to each pole in response to at least a partial loss of current to one or more of the poles and can include a current distribution matrix for determining a current value for each pole in such instances.