模糊自适应PID楼宇变频恒压供水控制系统设计

Fuzzy adaptive PID control system design of building frequency constant water supply

针对楼宇变频恒压供水控制系统工作时被控对象参数会发生变化,同时整个系统是一个复杂、大滞后时延系统。传统的控制方法大多采用PID进行控制,但是其控制效果差。为了对楼宇中供水系统中的水压进行有效的控制,采用模糊自适应PID控制器根据楼宇中供水管网的水压偏差和偏差变化率对PID参数进行自动调整,并经过MATLAB仿真。结果表明,模糊自适应PID与PID相比,具有更好的稳态精度和动态响应,满足楼宇变频恒压供水系统的控制要求。

The parameters of the controlled object will change when the frequency conversion constant pressure water supply control system is working. Most of the traditional control methods are controlled by PID, but the control effect is poor. In order to water pressure of the water supply system in the building of effective control, the fuzzy adaptive PID controller to adjust the PID parameters automatically according to the pressure deviation and deviation change rate of building water supply network, and through MATLAB simulation. The results show that the fuzzy adaptive PID has better steady-state accuracy and dynamic response compared with the PID, and can meet the control requirements of building variable frequency constant pressure water supply system.