Design of control system of coagulant dosing based on PLC

CUI Dongfeng; ZHOU Rulu

doi:10.13272/j.issn.1671-251x.2015.02.023

Volume 41 Issue 2

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CUI Dongfeng, ZHOU Rulu. Design of control system of coagulant dosing based on PLC[J]. Industry and Mine Automation, 2015, 41(2): 83-85. doi: 10.13272/j.issn.1671-251x.2015.02.023

Citation:

CUI Dongfeng, ZHOU Rulu. Design of control system of coagulant dosing based on PLC[J]. Industry and Mine Automation, 2015, 41(2): 83-85. doi: 10.13272/j.issn.1671-251x.2015.02.023

CUI Dongfeng, ZHOU Rulu. Design of control system of coagulant dosing based on PLC[J]. Industry and Mine Automation, 2015, 41(2): 83-85. doi: 10.13272/j.issn.1671-251x.2015.02.023

Citation:

CUI Dongfeng, ZHOU Rulu. Design of control system of coagulant dosing based on PLC[J]. Industry and Mine Automation, 2015, 41(2): 83-85. doi: 10.13272/j.issn.1671-251x.2015.02.023

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Design of control system of coagulant dosing based on PLC

doi: 10.13272/j.issn.1671-251x.2015.02.023

CCTEG Hangzhou Research Institute for Environmental Protection, Hangzhou 311201, China

Publish Date: 2015-02-10

Abstract

Abstract

The paper introduced principle, control strategy, hardware constitution and software design of a control system of coagulant dosing based on PLC in details. The control system takes light transmittance pulsation measurement value as control factor, adopts cascade control method of double PID controllers to realize the optimum control of coagulant dosing amount. Meanwhile the system introduces flow ratio feedforward control, so as to ensure the stability of water turbidity.
- mine water,
- coagulant,
- feedforward control,
- cascade control