scholarly journals Application of the S7-200PLC and KINGVIEW6.53to the constant pressure water supply system with variable frequency

2015 ◽  
Author(s):  
Yan Bai ◽  
Bei Sun ◽  
Zhiyi Zhang
Keyword(s):  
Water Supply ◽  
Constant Pressure ◽  
Supply System ◽  
Water Supply System ◽  
Variable Frequency ◽  
Pressure Water

Research of Constant Pressure Water Supply System Based on PLC

2014 ◽  
Vol 624 ◽  
pp. 465-468 ◽  
Author(s):  
Mei Fang Wan
Keyword(s):  
Control System ◽  
Water Supply ◽  
Constant Pressure ◽  
Frequency Converter ◽  
Supply System ◽  
Water Supply System ◽  
Variable Frequency ◽  
Variable Flow ◽  
Pressure Water ◽  
Pump Pressure

This article designs one constant pressure water supply system based on PLC. In this system, PLC and frequency converter is the main control system. Moreover, the water-supply system with a variable frequency and constant pressure is based on PCL and combines with water supply pump, pressure gage and other equipment. Water supply system realizes the water supply of constant pressure and variable flow.

Energy-Saving Applying Study of Fuzzy Control in the Variable Frequency and Constant Pressure Water Supply System

2012 ◽  
Vol 591-593 ◽  
pp. 1307-1310
Author(s):  
Yao Bin Hu ◽  
Yu Lin Wang ◽  
Liang Bin Hu ◽  
Peng Wei
Keyword(s):  
Fuzzy Control ◽  
Water Supply ◽  
Energy Saving ◽  
Constant Pressure ◽  
Supply System ◽  
Water Supply System ◽  
Fuzzy Arithmetic ◽  
Variable Frequency ◽  
Pipe Network ◽  
Pressure Water

A new energy-saving method of variable frequency and constant pressure water supply system based on fuzzy control theory and software control technique is presented in this paper. Firstly, collecting the pipe network pressure periodically through the pressure sensor, the differential pressure signal will be sent into fuzzy controller after comparing the pipe network pressure with the set pressure. Then send a precise control quantity into the PID regulator to control output frequency of the frequency converter after a series of fuzzy arithmetic and solution of fuzzy arithmetic, so as to achieve the purpose of pump speed and consumed power controlling. The operating principle of variable frequency and constant pressure water supply system and the design procedures of software programming are elaborated. Practical application shows that the variable frequency and constant pressure water supply system based on fuzzy control has good effect on energy saving and obvious economic benefits and is worth popularizing and applying.

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