THE APPLICATION OF STRONG PROPORTIONAL ACTION FUZZY CONTROL ON THE PHPROCESS

This paper proposed a strong proportional action fuzzy control algorit hm. In the strong proportional fuzzy control, the fuzzy error set is u sed to find the fuzzy incremental control output at first. Then the di fference between two adjacent fuzzy incremental control outputs is use d to infer the final control action. The algorithm is applicable not o nly to the weak acid-strong base neutralization process but also to th e strong acid-strong base neutralization process. Simulation and exper imental studies were carried out to show the effectiveness of the stro ng proportional action fuzzy control algorithm on pH control systems. In experimental studies, a method for on-line tuning the controller pa rameters was also suggested. This method provides an easy way of on-li ne tuning of fuzzy controller.