摘要
介绍了两种在线检测与控制碱液浓度的技术，一种是采用电极法，并辅以查表法和插值技术；另一种是采用差压法，并辅以一定的修正．针对系统存在大滞后的特点，提出了一些实用的控制算法．
Two kinds of methods of on line detecting and control for lye density are introduccd. One is the electrode method adopted the technologies of checking table and inserting value. Another is the difference pressure method with which some correcting technology is used at the same time. Based on the feature of large lag existed in the system, a series of useful control algorithms are proposed in the article.
