| 摘要 |
<p>PURPOSE:To improve an accuracy of an output timing and to accurately control a plate thickness by fetching a frequency of a plate thickness deflection at an inlet side, calculating a lag time of a control system as a function of the frequency and correcting the output timing of the plate thickness control. CONSTITUTION:A frequency (f) of the plate deflection signal DELTAHi at the inlet side detected by a inlet side thickness gage 7 and feeds it to an output timing arithmetic unit 21. The output timing arithmetic unit 21 sampling inputs the plate thickness deflection frequency (f) at the inlet, a pulse (pi) of a pulse generator 6, calculates the output timing of the plate thickness control output in a prescribed arithmetic cycle, then feeds to a feed-forward controller 8. Therefore even if the frequency of the inlet side plate thickness deflection changes, the control output timing is corrected in corresponding to the change, the accuracy of the control output timing is improved covering all frequency range.</p> |
