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Design and Implementation of Oil-Sewage Disposal Automation System Based on PLC

Author: FuXiaoGuang
Tutor: WangBingWen
School: Huazhong University of Science and Technology
Course: Control Theory and Control Engineering
Keywords: Sewage treatment Monitoring System Filter Automation Dosing Automation WinCC STEP7
CLC: TP273
Type: Master's thesis
Year: 2007
Downloads: 532
Quote: 4
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Abstract


In this paper, oily wastewater treatment process automation instrument settings and automatic control system design were analyzed, evaluated, and oilfield wastewater treatment process combined with the current actual situation , to study and design of a high degree of integration of oily wastewater treatment automation systems. The text of the sewage treatment automation system control program carried out a detailed research and demonstration , analysis summarizes the advantages and disadvantages of various solutions , and ultimately determine the use of industrial machines and programmable logic controller (PLC) program . In order to obtain accurate system model, control equipment and on-site monitoring instruments to do a full understanding of the characteristics and detailed analysis of each of the sewage treatment process . In this paper, Jianghan Oilfield Wang a sewage station control equipment and automation of existing instruments, making a reasonable model of the system . In this system, based on the model , the paper presents a hierarchical control system implementation , and the combined layers needs analysis demonstrated more control functions and system control objectives , and also process proposed according to each PLC software modules the division . The paper also describes a series PLC and Siemens SIMATIC WinCC configuration software features and proposed to develop software STEP7 PLC variables defined in WinCC integrated approach to improve development efficiency. In order to improve the effectiveness and accuracy of control , the paper elaborated on the PLC when the acquisition of analog filtering algorithm and its implementation method , and gives the digital PID algorithm in the frequency control is achieved. For the device up , the greatest impact on the quality of wastewater treatment , the control flow of the most complex dosing and filtration subsystem , the paper presents an effective solution. In this paper, the design of sewage treatment automation system architecture design reasonable, comprehensive , reliable operation.

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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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