| 摘要 |
<p>PROBLEM TO BE SOLVED: To remove a harmful wedge and to completely eliminate rolling accident due to meandering by measuring the amount of wedge of a rolled stock on the outlet side of the rolling mill at the final stage and calculating the amount of leveling for correcting deviation from the target value using a theoritical model and feedback control such as integral control. SOLUTION: The deviation of wedge is calculated with a comparator 1. A formula is calculated in an integral control section 2. In the formula,ΔSdfi : the manipulated variable of leveling, aB: the distance between supporting points of reduction, b: the width, m: the plasticity coefficient per unit width, D: the parallel rigidity of the 2nd-kind, Gdf : the gain of an integrator, hdf Mom : the measured value of wedge, hdf REF: the target value of wedge, KF: the influence coefficient of rolling load, P: the rolling load, F: roll bending force. The deviation is converted into the amount of leveling by a leveling model 3. The quantity of compensation for making the average value 4 of wedge zero is calculated by the leveling model 5. The results of the models 3, 5 are added with an adding machine 6. The abnormal output is restricted with a limiter 7 and the amount of leveling is outputted.</p> |
