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Research and Development of Fault Diagnosis System for Catalytic Cracking Process

Author: ZhengZuo
Tutor: CaoLiuLin
School: Beijing University of Chemical Technology
Course: Control Theory and Control Engineering
Keywords: Fault Diagnosis Catalytic cracking Expert system Visual Prolog language
CLC: TP277
Type: Master's thesis
Year: 2009
Downloads: 93
Quote: 3
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Abstract


In today 's industrial automation and the increasing degree , the safety issues more and more attention . Catalytic cracking process as a leading refining process , the security and stability of production to ensure that the basis of the economic and social benefits of petrochemical enterprises . Prone to accidents in the refining industry FCCU object design fault diagnosis expert system language Visual Prolog by example simulation test , and eventually reach the system analysis , timely find out the fault to the reasoning of the majority of abnormal conditions reasons, to provide appropriate treatment measures . The main findings of the paper include the following aspects : 1 , a comprehensive understanding of the process and its failure to grasp the FCCU , collecting and collating a lot of fault knowledge and rules . Catalytic cracking process characteristics and device structure function is divided into five parts , so that the system is structured , easy to manage . FCCU objects, the use of expert system for fault diagnosis method based on production rule reasoning combined with Visual Prolog language design advantage in knowledge representation and logic reasoning fault diagnosis system . 3 , according to the knowledge of the characteristics of the fault symptoms into alarm from the field and from the two types of information can not monitor , so the diagnosis is based on a richer online and offline fault diagnosis ; parameter input link , to make the system more flexible , easy to use ; joined the case queries and fault history function , easy to sum ??up , manage and maintain . The combination of Visual Prolog programming principles from the perspective of software functional design and VIP programming this catalytic cracking fault diagnosis system are described , and specific discussion of the design and development of various modules . FCCU software to the chemical process and system to control the simulation the internship series of software \Before and after the failure of the FCC production process , the system can correctly infer the cause of the malfunction and given appropriate treatment measures , in order to achieve the purpose of production safety and guiding operation .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Monitoring, alarm,fault diagnosis system
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