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. 06, 2015
Filed:
Jun. 12, 2012
Brian Gallert, Royal Oak, MI (US);
Khwaja M. Rahman, Troy, MI (US);
Matthew D. Laba, Oakland, MI (US);
Paul F. Turnbull, Canton, MI (US);
Brian Schulze, Ortonville, MI (US);
Brian Gallert, Royal Oak, MI (US);
Khwaja M. Rahman, Troy, MI (US);
Matthew D. Laba, Oakland, MI (US);
Paul F. Turnbull, Canton, MI (US);
Brian Schulze, Ortonville, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A hub assembly for an electric machine includes a rotor hub and a machine rotor. Rotation of the machine rotor generates an electromagnetic (EM) field. The hub assembly includes a resolver rotor that encodes an angular position of the machine rotor as a set of resolver signals. An EM field barrier ring between the resolver rotor and the rotor hub adds a magnetic barrier between the machine rotor and the resolver rotor to reduce noise in the resolver signals. The resolver rotor may be bonded to the EM field barrier ring. The EM field barrier ring may have an L-shaped cross section, and may be press-fitted into a pocket of the rotor hub. A vehicle includes a transmission having an input member and an electric machine having a rotor shaft connected to the input member of the transmission. The electric machine includes the hub assembly noted above.