带离线检测补偿的酸浓度控制系统

Acid Concentration Control System with Off-line Detection Compensation

在对首钢京唐酸轧机组的酸浓度控制系统进行研究的基础上,分析了系统的特点以及酸浓度的检测原理,并详细介绍了酸浓度的计算、补偿和控制方法。针对在线检测酸浓度往往存在偏差,系统增加了离线检测,并经过线性分析得到回归曲线,对在线酸浓度检测进行补偿,有效减小了测量误差。实践证明,该系统能够对酸浓度进行精确控制,满足生产需求。

The acid concentration control system used in the combined picking line-tandem cold mill （PL-TCM） of Capital Steel Beijing-Tangshan Iron Steel Co.,Ltd.has been researched.The features of the system and the detection principle of acid concentration are analyzed;and the methods of calculation,compensation and control for acid concentration are introduced in detail.Due to deviation always appears in online detection of acid concentration,thus off line detection compensation is added in the system.Through linear analysis,the regression curve is obtained to compensate online detection and reduce the measurement error.The practice verifies that the system is able to precisely control the concentration of acid and meets the productive demands.