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:
Jun. 06, 2017
Filed:
Apr. 02, 2014
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Mark Cooper, Eden Prairie, MN (US);
Kelly J. Bronk, Kewaskum, WI (US);
Wei Qian, Shanghai, CN;
Zhenhuan Yuan, Shanghai, CN;
Shankernarayan Ramanarayanan, Eden Prairie, MN (US);
Manas Sawant, Madison, WI (US);
Shun Feng, Edina, MN (US);
Robert H. Schmidt, Germantown, WI (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
An improved system for monitoring vibration of an electric machine is disclosed. According to one embodiment, sensors are positioned in a plane orthogonal to the motor shaft and each sensor detects vibration along at least one axis of the motor. The sensors are oriented such that the polarity of each sensor is reversed. The pairs of sensors may be used to isolate specific vibrations within the motor. According to another embodiment, a sensor may be mounted directly to the motor shaft. The sensor on the motor shaft directly detects vibrations along the motor shaft. Optionally, a second sensor may be mounted to a fixed location within the motor housing, and the combination of the sensor on the motor shaft and the sensor at a fixed location may be used to isolate specific vibrations within the motor. A motor controller may adjust operation of the motor to reduce the isolated vibration.