为了使机架间的速度匹配关系达到最佳状态,某大棒厂轧线的微张力控制采用先单调后联调的控制方式,即先通过单调方式调节下游机架的速度,控制这两个机架间的张力,再以新确定的两个机架间的速度关系切换到联调方式控制轧线的速度,主要控制内容包括轧件跟踪控制、微张力时序控制、微张力采样控制、参数自适应的微张力PI调节器控制及轧机的速度自适应控制。该控制系统应用于现场后,微张力控制精度高、速度快、稳定性好。 In order to achieve the best match between the speed of the rack, the micro-tension control of a large bar mill with monotonous first post-joint control mode, that is, through the monotonous way to adjust the speed of the downstream rack to control the two The tension between the racks is then switched to the speed of the controlled rolling line by the newly determined speed relationship between the two racks. The main control contents include rolling track control, micro tension timing control, micro tension sampling control, parameters Adaptive Tension PI Controller Control and Mill Speed ​​Adaptive Control. The control system applied to the scene, the micro-tension control of high precision, fast, good stability.