CHATTERING DETECTION METHOD FOR COLD ROLLING MILL, CHATTERING DETECTION DEVICE FOR COLD ROLLING MILL, COLD ROLLING METHOD, AND COLD ROLLING MILL

摘要

A chattering detection method for a cold rolling mill according to the present invention includes: a step of measuring vibration of a cold rolling mill; a step of calculating a time waveform of vibration intensity by performing frequency analysis on a time waveform of the vibration measured at the step of measuring for a predetermined period equal to or shorter than a time in which a periodic vibration continues without converging; and a step of determining a sign vibration to detect a chattering sign vibration of the cold rolling mill based on the number of points having vibration intensity values that exceed a predetermined threshold, the points being included in the time waveform of the vibration intensity calculated at the calculating step.