基于PLC的无塔恒压供水控制系统的研究与开发

发布时间：2018-05-25 20:02

本文选题：无塔恒压供水 + 模糊PID　；参考：《兰州理工大学》2016年硕士论文

【摘要】：高楼供水系统的可靠、经济和稳定与用户的正常工作和生活息息相关,运营商和消费者也在不断追求水资源的高效利用和有效管理。近几年来,二次供水加压技术将无塔装置与变频调速技术有效结合,并将微机控制技术应用于水泵机组的全自动控制,此无塔恒压供水系统高效节能、安全可靠。论文的主要内容如下:1.建立无塔恒压供水系统模型,确定无塔恒压供水系统设计方案,配置供水系统所需的主要硬件组成部分,分析无塔恒压供水系统的节能原理,确定出恒压供水系统中的水泵循环及切换条件。2.设计控制系统的主电路和控制电路,利用STEP 7软件完成供水控制系统的硬件组态和控制程序编制,其中分析PID调节原理并利用PID模块实现恒压控制,最后在PLCSIM中仿真模拟,实现全自动恒压供水功能。3.分析模糊PID控制基本理论,通过模糊推理整定出控制规则,设计了模糊PID控制器,并建立供水系统的近似模型,采用MATLAB中的Simulink模块将所设计的模糊PID控制器与常规PID控制器对供水系统模型的恒压控制进行仿真对比。4.利用Win CC组态软件设计HMI人机交互界面,对现场运行的设备进行监控和管理,实现实时数据采集、各类信号的报警归档等功能,同时,监控系统也能完成对设备的控制、参数的调节等功能。
[Abstract]:The reliability, economy and stability of the tall building water supply system are closely related to the normal work and life of the users. Operators and consumers are also pursuing the efficient utilization and effective management of water resources. In recent years, the secondary water supply pressurization technology effectively combines the tower free device with the variable frequency speed regulation technology, and applies the microcomputer control technology to the automatic control of the pump unit. This water supply system with constant pressure without the tower is efficient, energy saving, safe and reliable. The main contents of the thesis are as follows: 1: 1. The model of water supply system with constant pressure without tower is established, the design scheme of water supply system with constant pressure without tower is determined, the main hardware components of water supply system are configured, and the principle of energy saving of water supply system with constant pressure without tower is analyzed. Determine the constant pressure water supply system water pump cycle and switching conditions. 2. The main circuit and control circuit of the control system are designed. The hardware configuration and control program of the water supply control system are completed by using STEP 7 software. The principle of PID regulation is analyzed and the constant voltage control is realized by PID module. Finally, the simulation is done in PLCSIM. Realize automatic constant pressure water supply function. 3. The basic theory of fuzzy PID control is analyzed, the control rules are determined by fuzzy reasoning, the fuzzy PID controller is designed, and the approximate model of water supply system is established. The design of fuzzy PID controller is compared with that of conventional PID controller by using Simulink module in MATLAB to simulate the constant pressure control of water supply system model. The HMI man-machine interface is designed by using Win CC configuration software, which can monitor and manage the equipment running on the spot, realize the functions of real-time data acquisition, alarm and archiving of all kinds of signals, etc. At the same time, the monitoring system can also control the equipment. Parameter adjustment and other functions.
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU821;TP273

【相似文献】