基于PID控制技术的供水网控制系统设计

Design of water supply network control system based on PID control technology

针对传统的城市深井供水网控制系统采用现场人员值守所造成的费用高,效率低,不便于管理,设计基于PID控制技术的城市深井供水网水位控制系统.系统首先采用PID控制技术,通过压力传感器获取水位变化信息,然后反馈到PID的控制器形成闭环控制,通过对变频器控制实现深井水泵电机的变频调速,从而实现了对供水网水位的自动控制.MATLAB仿真实验结果表明,系统对深井供水网水位PID控制响应速度快,运行稳定,控制精度高.

To solve the problem of the traditional control system of municipal deep well water supply network which is high-cost, inefficient, and inconvenient to manage, the water level control system of the network based on Proportional-Integral-Differential（PID） control technology is designed. The water level change information is obtained through pressure sensor and feedback to the PID controller, forming a closed-loop control. Frequency conversion speed control of deep well pump motor was achieved by controlling frequency converter and the automatic control of water supply network is realized. The simulation experiment results by using MATLAB show that the system has quick response, good stability, high control accuracy to PID control of deep well water supply network.