According to the technical requirements of
vibration monitoring of rolling mill and the performance characteristics of the
roller slewing at a high speed and changing its position frequently, and by taking the vibration
displacement as the monitoring parameter, a new method for position track and non-contact immediate vibration displacement monitoring of the work roller was proposed. The arrangement of the positions of monitoring points was analysed. Based on the eddy current sensor, a set of sensor equipment provided with a function of frequent automatic shift was developed and the position control of the sensor and the
vibration monitoring system of the work roller were investigated. The results show that the signal of the vibration displacement of the work roller measured by this method is characterized as a frequency of lower than 500 Hz, which avoids the interruption of bearing vibration signals and electrical noises, hence the high (signal-to-noise) ratio. While the signal is gained by the traditional method for measuring the acceleration of bearing seat, the noise caused by electrical interruption signal is very serious, nearly flooding the useful signal. It is impossible to correctly draw the spectral characteristics of the vibration in its low frequency range.