SYSTEM AND METHOD FOR DETECTION OF MOTOR VIBRATION

摘要

An improved system for monitoring vibration of an electric machine (10) is disclosed. According to one embodiment, sensors (40) are positioned in a plane (90) orthogonal to the motor shaft (32) and each sensor (40) detects vibration along at least one axis (X, Y, Z) of the motor (10). The sensors (40) are oriented such that the polarity of each sensor (40) is reversed. The pairs of sensors (40) may be used to isolate specific vibrations within the motor (10). According to another embodiment, a sensor (40) may be mounted directly to the motor shaft (32). The sensor (40) on the motor shaft (32) directly detects vibrations along the motor shaft (32). Optionally, a second sensor (40) may be mounted to a fixed location within the motor housing, and the combination of the sensor (40) on the motor shaft (32) and the sensor (40) at a fixed location may be used to isolate specific vibrations within the motor. A motor controller (50) may adjust operation of the motor (10) to reduce the isolated vibration.