| 摘要 |
<p>PURPOSE:To prevent a snake motion of a rolling material and to improve a rolling work, by setting automatically a control constant in accordance with a plate thickness distribution in the plate width direction of the rolling material, when preventing the snake motion of the rolling material. CONSTITUTION:A plate crown Ch of a rolling material is detected by a detecting device 22 and is inputted to a constant correcting circuit 21. As a result, a control coefficient alpha and a differential time constant T in a convergent stable area corresponding to the plate crown Ch of the rolling material are set, and are fed back to a variable coefficient device 20 and a differentiator 18. Accordingly, the control coefficient alpha and the differential time constant T are set automatically, the burden of an operator is lightened, also a forming property of the rolling material is improved, and a rolling mill whose safety is high is obtained.</p> |
