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A Petri-Net Based Characteristic State Supervisor of Chemical Batch Process

Author: SongNa
Tutor: LiuZhenJuan
School: Beijing University of Chemical Technology
Course: Control Theory and Control Engineering
Keywords: Supervise Petri nets Batch Processes Feature state supervision
CLC: TP277
Type: Master's thesis
Year: 2008
Downloads: 59
Quote: 2
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Abstract


The process of supervision is to ensure that the production system is stable and reliable operation , improve product quality , effective means of production and the key technology , Petri nets for intermittent industrial process supervision is more active area of ??research . Based on Timed Petri nets and hybrid Petri nets , in-depth study intermittent industrial process oversight vulcanization accelerator M production process to the experimental device for the object , and the establishment of a batch process monitoring system based on high-level Petri nets , and finally on the modeling verification and simulation methods . The first part of this article describes the basic concept of timed Petri nets and hybrid Petri nets , and Matlab simulation study of a simple batch process . The second part of the nature of the hybrid systems for chemical batch process , the process characteristics of the supervision of the state - based methods , the establishment of a Petri net with Hierarchical structure characteristic state supervision . The characteristic state supervision by the real - time data processing module , two layers of Petri nets feature state supervision model and the expert supervision reasoning module three modules , the interaction between the three modules to precisely the supervision of a discrete batch process makes supervision The consecutive amount , to supervise the entire batch process . Among them, the lower two layers of Petri nets feature state supervision model using hybrid Petri nets to extract the state of the discrete characteristics of the controlled process , the the upper time Petri nets model describes the evolution of a batch process feature state . When the production process is abnormal , the monitoring information is given by the expert reasoning module . Papers to the experimental device vulcanization accelerator M production process , for example , elaborate on the content of the supervision of the design . Discussed on the basis of theoretical studies , the MATLAB simulation analysis method of Petri nets , which provides for the supervision of Petri nets model - based simulation analysis tool . Based on Timed Petri Nets and hybrid Petri nets batch process supervision modeling and simulation methods for batch process supervision research provides a good idea , so accurate supervision of intermittent industrial processes and analysis possible . This analysis is expected to be able to batch chemical process there is a good prospect .

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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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