多変数制御による熱延仕上げミルの板幅制御システム

概要

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To attain a successful width control for hot strip mill, it is important to control a width at each stand preventing excessive tension imbalance for some specified stands.<BR>Our research goal is to develop a multivariable control algorithm for the new width control system. In the proposed algorithm, the width is controlled by modifying the inter-stands tension, which value is derived from the measured width and the on-line calculated width. An optimal control principle is applied and the tension balance can be maintained by tuning the weighting matrix in the performance index. The on-line control algorithm is designed such that the tension modification value can be obtained in short time, compared with the optimal regulator. This calculation is realized using a formula manipulating procedure and the control performance is same to that by the optimal regulator.<BR>The control system based on this algorithm has been applied to the hot strip mill and the width deviation can be remarkably reduced than before.
システム制御情報学会の論文