In tandem hot strip rolling mills, the roll speed of the mill stands is synchronized to ensure a uniform mass flow. A uniform mass flow is desirable to keep the strip tension constant and thus avoid large movements of the loopers which are located between the mill stands in order to control the strip tension. This also improves the general thickness quality and prevents the strip from necking in case of too excessive strip tension. In typical state-of-the-art implementations, the roll speed is synchronized in a cascade master–slave control structure where the very last downstream mill stand serves as speed master and the upstream mill stands operate in a slave mode to make sure that the mass flow is kept constant. While the relation between the roll speeds in the classical synchronization control concept is typically constant, a thorough analysis of the mass flow reveals that the slip between the work rolls and the strip is time varying. Therefore, in order to ensure a uniform mass flow, a novel adaptive speed synchronization controller is proposed, which can be easily added to the existing control structure and is computationally undemanding. To this end, a mathematical model of the whole tandem mill including the complete control structure is derived and validated by measurements. Simulation results for this validated model prove that the proposed mass flow controller clearly outperforms the existing solution.

在带钢热连轧机中，轧机机架的轧辊速度是同步的，以确保质量流量均匀。均匀的质量流是理想的，以保持带钢张力恒定，从而避免位于轧机机架之间的活套的大运动，以控制带钢张力。这也提高了总体厚度质量并防止在带钢张力过大的情况下带钢颈缩。在最先进的典型实施中，轧辊速度在级联主从控制结构中同步，其中最后一个下游轧机机架作为速度主机，上游轧机机架以从属模式运行，以确保质量流量保持恒定。虽然经典同步控制概念中轧辊速度之间的关系通常是恒定的，对质量流量的彻底分析表明，工作辊和带钢之间的滑动随时间变化。因此，为了保证质量流量的均匀性，提出了一种新颖的自适应速度同步控制器，它可以很容易地添加到现有的控制结构中，并且对计算量要求不高。为此，推导出包括完整控制结构在内的整个连轧机的数学模型，并通过测量进行验证。该验证模型的仿真结果证明，所提出的质量流量控制器明显优于现有解决方案。它可以很容易地添加到现有的控制结构中，并且对计算要求不高。为此，推导出包括完整控制结构在内的整个连轧机的数学模型，并通过测量进行验证。该验证模型的仿真结果证明，所提出的质量流量控制器明显优于现有解决方案。它可以很容易地添加到现有的控制结构中，并且对计算要求不高。为此，推导出包括完整控制结构在内的整个连轧机的数学模型，并通过测量进行验证。该验证模型的仿真结果证明，所提出的质量流量控制器明显优于现有解决方案。