Rockwell Automation Technologies Incorporated

Shun Feng

Robert H Schmidt

Mark R Cooper

Wei Zhu

Paul Jerome Grosskreuz

Wei Qian

Zhenhuan Yuan

Shankernarayan Ramanarayanan

Kelly James Bronk

Manas Sawant

Edwin Xikai Sun

A system and method for cooling an enclosed position feedback device mounted to a motor is disclosed. An active cooling device is mounted between the position feedback device and the housing enclosing the position feedback device. A compliant mount is provided to accommodate vibration in the position feedback device. The compliant mount may be a compliant thermal pad positioned between the feedback device and the active cooling device. Optionally, the compliant mount may be provided between the motor and the position feedback device.

System and method for active cooling of on-machine devices

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.

System and method for detection of motor vibration

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Edina, MN, United States of America

Shun Feng