Study On PLC Constant Pressure Water-Supplying System

This paper, designed for Yan tai Fu Lai Shan Pump Station Water- Supplying System , has adopted a kind of fuzzy controlling constant voltage water-supplying system realized by PLC, and has surmounted the parameter adjustment difficulty in traditional PID design. The key of the design lies in maintaining hydraulic pressure of pipes net constant, since the fluctuation of hydraulic pressure of pipes net is great, traditional PID method is nearly impossible to determine mathematics model, whereas fuzzy control does not need accurate mathematics model, therefore fuzzy control is adopted in the system and has gotten satisfactory effect in actual application.This paper has elaborated in detail the methods and thoughts of the design of the monitoring computer's software and PLC's software in the project , and has carried out simple introduction for the network design of the entire project.