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简单介绍了冷轧平整的目的和意义,说明了延伸率的定义和测量方法。描述了应用于唐钢冷轧薄板厂平整机组的延伸率控制系统,对该延伸率控制系统中的速度前馈控制和延伸率反馈控制做了重点阐述。针对在加减速或出现其它扰动时的延伸率波动问题,提出了在反馈控制中增加比例控制的解决方案。实际结果表明,延伸率控制系统动态响应明显加快,98.7%的带钢延伸率偏差都控制在了0.1%以内。
The purpose and significance of cold rolling are briefly introduced, and the definition and measuring method of elongation are described. The control system of elongation applied to the smoothing unit of the cold rolled sheet factory in Tangshan Iron and Steel (Group) Company is described. The emphasis is put on the emphasis of the feedforward control of the elongation and the feedback control of the elongation in this elongation control system. Aiming at the problem of the fluctuation of the elongation in acceleration and deceleration or other disturbances, a solution to increase the proportional control in the feedback control is proposed. The actual results show that the dynamic response of the elongation control system significantly accelerated, and 98.7% of the strip elongation deviation are controlled within 0.1%.