Application of Fuzzy Adaptive PID Control in Chlorine Flow Control System

Chloroacetic acid production is a typical chemistry industry process, Chlorine gas flow is one of the most important parameter in this process. It has a great influence on safety, high efficiency of production. In chloroacetic acid production, due to the parameter time variable and nonlinear character, it is hard to control with traditional PID controller. So this paper adopts fuzzy technology to realize the adjustment of PID controller parameters online. The fuzzy PID controller can adapt to the change of the controlled object, so as to realizing the control requirement of chlorine flow in the chloroacetic acid reaction kettle. Theoretical analysis and MATLAB simulation results show that fuzzy self-adaptive PID control has better control performance than conventional PID control.