摘要
针对传统的供水系统供水不稳定,而且能源浪费严重的问题,提出了基于PLC的Fuzzy与PID切换控制算法而设计的变频恒压供水系统,并设计了系统的硬件电路与软件系统。系统由PLC、变频器、压力变送器、流量计、电器阀柜、上位机等组成;通过Simulink工具对供水系统进行了仿真,从仿真结果上分析了Fuzzy-PID控制和传统PID控制效果的差别;为实现远程监控,提高了管理水平,上位机采用WINCC编写了实时监控界面;通过WINCC组态软件对水泵的运行状态进行了监控与相关参数的记录,同时重点介绍了下位机PLC和上位机组态软件之间通信的实现。研究结果表明,基于F-PID控制策略的恒压供水系统相对于传统的供水方式更加高效、节能,相对于传统PID控制系统而言控制速度更快、精度更高。
Aiming at the problems that traditional water supply system is not stable and energy is wasted seriously,a switching control method based on Fuzzy and PID,as well as its hardware circuit and software system,were presented to design the variable frequency and constant pressure water-supply system based on PLC.System was composed by PLC,inverter,pressure transmitter,flow meter,electric valve,PC and so on.By analyzing the simulation results obtained using Simulink,the differences of control performance between FuzzyPID and traditional PID were illustrated.The picture of monitor system was realized by WINCC,which has realized remote monitor and raised the management level.Through the WINCC configuration software,the operational states of pumps were monitored and the associated parameters were recorded,the way that how to realize the communication between PC and PLC was covered in more detail.The results indicate that the constant pressure water supply system based on the Fuzzy-PID control strategy is more cost-efficient,compared with the traditional water supply method,and it has much faster and more accurate compared with the traditional PID control system.
出处
《机电工程》
CAS
2013年第5期591-595,共5页
Journal of Mechanical & Electrical Engineering
