模糊PID控制在变频恒压供水系统中的应用

Application of fuzzy PID control in variable frequency constant pressure water supply systems

针对变频恒压供水系统非线性、大滞后的特点,常规的PID控制很难满足控制要求,设计了一种自适应模糊PID控制器,该控制器具有模糊控制和PID控制的优点,并可在线实时调整PID参数。最后,通过MATLAB仿真表明,自适应模糊PID控制改善了系统的动态性能和稳态性能,取得了良好的控制效果,达到了供水系统的恒压控制要求。

The traditional PID control satisfy control need difficultly,because Variable frequency constant pressure water supply systems are nonlinear and large lagging.A adaptive fuzzy PID controller is designed.The controller combines the fuzzy control with PID control.PID parameters are tuned on line.The fuzzy controller improves the dynamic and stable performance by MATLAB simulation.The good control effect is achieved.The constant pressure water supply is got.