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圧延プロセスにおける張力制御システム

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川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.19 (1987) No.1

圧延プロセスにおける張力制御システム

Application of Tension Control System to Rolling Plant

石 川 好 蔵(Kozo Ishikawa) 土 井 克 彦 (Katsuhiko Doi) 佃 一 二 三 (Hifumi Tsukuda) 岩本 周治(Shuji Iwamoto)

要旨 : 当社における鉄鋼圧延ミルラインおよびプロセスラインの張力制御システムの適用結果に つき報告した。熱間圧延仕上ミルでは,ルーパー制御シミュレーション解析を行った上でル ーパー制御に多変数制御理論を応用し,システムの非干渉化技術を確立した。これにより板 幅精度の向上を図ることができた。冷間圧延ミルでは,機械系軸振動を抑えながら主機速度 応答60rad/s の高応答ドライブシステムを開発し,板厚精度向上が図られた。また,プロセ スラインにおいては,各ロールの交流モーター速度制御および最適張力分布を確保する制 御構成により品質向上,高速安定通板に大きな効果があった。 Synopsis :

The results of applying a strip tension control system to the steel rolling mill and process line in our company are herein reported. In the hot strip mill, the authors established a de-coupling control technique by applying the multi-variable control theory to the lopper control system, based on the computer simulation analysis, and thus improvement in accuracy of strip width was achieved. For the high-speed response main motor drive system in the cold tandem mill, a speed response (ωc) of 60 rad/s was developed, while suppressing shaft vibration by interaction between mechanical and electrical control systems. The authors achieved improvement in accuracy of strip gauges. As a result of introduction of all the AC-motor drive system to each roller and construction of the tension control system which achieves optimum distribution of strip tension, it has become possible to improve production quality and realize high-speed threading with-out trouble.

(c)JFE Steel Corporation, 2003

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