System and method for detection of motor vibration

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9673685
SERIAL NO

14243353

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
ROCKWELL AUTOMATION TECHNOLOGIES INC1 ALLEN-BRADLEY DRIVE MAYFIELD HEIGHTS OH 44124

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bronk, Kelly J Kewaskum, US 4 400
Cooper, Mark Eden Prairie, US 74 901
Feng, Shun Edina, US 5 176
Qian, Wei Shanghai, CN 127 1649
Ramanarayanan, Shankernarayan Eden Prairie, US 9 190
Sawant, Manas Madison, US 2 171
Schmidt, Robert H Germantown, US 45 789
Yuan, Zhenhuan Shanghai, CN 14 329

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