介绍了具有两架立轧机的八机架窄带热连轧系统,给出了连轧系统工艺参数、产品规格及质量要求。提出了S7 400系列计算机控制系统的硬件配置、系统的供电方式、全数字直流调速系统6RA70的传动配置方案以及PROFIBUS DP现场总线的连接方式。介绍了轧机所采用的活套高度和力矩控制器的结构及参数。最后给出了热连轧系统主干速度自适应设定方法。 The eight-stand narrow-strip hot strip mill with two stand-stand mills was introduced. The process parameters, product specifications and quality requirements of the continuous rolling system were given. The hardware configuration of S7 400 series computer control system, the power supply mode of the system, the transmission configuration scheme of 6RA70 all-digital DC speed regulation system and the connection way of PROFIBUS DP field bus are put forward. The structure and parameters of the looper height and torque controller used in the rolling mill are introduced. Finally, the method of adaptive setting of the main speed of the hot strip rolling system is given.