基于PID模糊控制与堵塞模型的过滤器反冲洗系统设计

Backwash system design for filter base on PID fuzzy control

分析反冲洗过滤器的工作过程,建立污垢形成堵塞的数学模型,并采用MATLAB软件设计基于PID模糊控制的反冲洗系统。结果表明,与PID控制相比,PID模糊控制降低了污水对反冲洗管道的最大冲击力及反冲洗时间,避免了超调现象。且系统采样时间越短,其特性曲线越好。

Analyzes the working process of backwash filter, builds the mathematical model of dirt rate. Based on PID fuzzy method, designs the backwash system by MATLAB. The comparison between PID and PID fuzzy control shows that PID fuzzy control helps to decrease the maximal shock and wash time as well as overshoot. The simulated curve means the shorter sampling time, the better performance.