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. 29, 2011
Filed:
Feb. 22, 2008
Semyon Royak, Beachwood, OH (US);
Mark M. Harbaugh, Richfield, OH (US);
Robert J. Breitzmann, South Russel, OH (US);
Thomas A. Nondahl, Wauwatosa, WI (US);
Peter B. Schmidt, Franklin, WI (US);
Jingbo Liu, Milwaukee, WI (US);
Semyon Royak, Beachwood, OH (US);
Mark M. Harbaugh, Richfield, OH (US);
Robert J. Breitzmann, South Russel, OH (US);
Thomas A. Nondahl, Wauwatosa, WI (US);
Peter B. Schmidt, Franklin, WI (US);
Jingbo Liu, Milwaukee, WI (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
The invention includes a motor controller and method for controlling a permanent magnet motor. In accordance with one aspect of the present technique, a permanent magnet motor is controlled by, among other things, receiving a torque command, determining a normalized torque command by normalizing the torque command to a characteristic current of the motor, determining a normalized maximum available voltage, determining an inductance ratio of the motor, and determining a direct-axis current based upon the normalized torque command, the normalized maximum available voltage, and the inductance ratio of the motor.