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连续酸洗过程中的最优速度控制、活套套量控制及张力控制等对提高机组稳定性和生产节奏,改善带钢表面质量有极其重要的作用。针对1 740mm酸轧机组,基于罚函数原理建立了速度目标函数模型,用于酸洗速度设定计算;同时,通过活套入口、出口速度控制实现活套套量的同步控制,满足了酸轧机组对活套套量和张力的要求。建立酸洗过程张力设定计算模型,提高了张力控制精度和系统快速响应性能,实现了酸洗速度协调和节奏控制。实践证明,高精度的模型设定计算显著提高了高强钢连续酸洗后的表面质量和板形质量,使得高强钢生产成材率进一步提高,满足了工业生产需要。
The optimal speed control, loop control and tension control in the continuous pickling process play an important role in improving unit stability, production rhythm and strip surface quality. For the 1 740mm mill, a speed target function model was established based on the penalty function principle, which was used to set and calculate the pickling speed. At the same time, the synchronous control of the looper throughput was realized by the looper inlet and outlet speed control, On the sets of volume and tension requirements. The calculation model of tension setting in pickling process was established, the tension control accuracy and system response were improved, and the coordination of pickling speed and rhythm control were realized. Practice has proved that high-precision model setting calculation significantly improves the surface quality and shape quality of high-strength steel after continuous pickling, making high-strength steel production rate further improved to meet the needs of industrial production.