| 摘要 |
<p>A system for controlling strip thickness in a rolling mill in which the rolling pressure applied to material is continuously measured or the strip thickness on the output side is continuously detected as a parameter of the outgoing thickness of the rolled strip and the result of measurement or detection of the parameter is used to obtain an autocorrelation. The power spectra for the entire region and a predetermined region covered by the autocorrelation are produced, so that the ratio of roll eccentricity component to the entire variation is obtained from the ratio between the two spectra. The roll eccentricity component is applied to a feedback loop of the control system in order to eliminate the effect of the roll eccentricity component on the automatic thickness control system.</p> |
