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Water dosing system Automatic Control Research

Author: LiangLiJin
Tutor: ZhuXueFeng；LiuZhenHan
School: South China University of Technology
Course: Control Engineering
Keywords: Water treatment Dosing system PLC control Multivariable Composite Control Software Control
CLC: TP273
Type: Master's thesis
Year: 2009
Downloads: 109
Quote: 1
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Abstract


\Traditional waterworks , water purifying dosage depends mainly controlled by manual experience , resulting in excessive consumption of water purifying , water quality issues such as difficult to master , with the public increasingly incompatible with the standard quality requirements . Therefore, the design and development of a more reasonable time for dosage control, establish and improve the automated dosing system , water production is crucial to achieve full automation is difficult lies. This dosing system for the automatic control of water research that is qualified to seek to ensure the water quality under the premise of making water plant in the production process for purifying agent scientifically dosing , so that \social and economic benefits to obtain a win-win . This paper for the alum dosing of chlorine , lime and other subsystems vote , with the traditional single- feedback control , PID control , feedforward - feedback control and other control scheme for a more in-depth and detailed comparative analysis presented to the PLC system to achieve multivariable complex control dosing control methods. Operation and practice , through technological innovation after alum dosing of chlorine , lime dosing subsystem vote , in terms of both the operation and control of production more in line with actual needs , and achieved good results in the following : You can take advantage of the current water treatment plant has been application of various types of water quality monitoring instrumentation, signal output make them participate in the water quality control ; simplify dosing control equipment , the choice of control method is more simple , the price is more economical equipment ; PLC can take advantage of powerful computing capabilities , I / O functions , the now implemented in hardware -based control mode , improvements to software- driven integrated control mode , the system control functions more flexible and applicable to the actual production ; make the control system suitable for use in a computer for remote adjustment control ; reasonable control of raw material consumption , saving production costs.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system
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