SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (4): 366-375.DOI: 10.1016/S1004-9541(13)60484-X

• 过程系统工程与过程安全 • 上一篇    下一篇

Study and Application of Case-based Extension Fault Diagnosis for Chemical Process

彭荻, 徐圆, 朱群雄   

  1. College of Information Science & Technology, Beijing University of Chemical Technology, Beijing 100029, China
  • 收稿日期:2011-07-02 修回日期:2011-11-07 出版日期:2013-04-28 发布日期:2013-04-26
  • 通讯作者: ZHU Qunxiong
  • 基金资助:

    Supported by the National Natural Science Foundation of China (61104131).

Study and Application of Case-based Extension Fault Diagnosis for Chemical Process

PENG Di, XU Yuan, ZHU Qunxiong   

  1. College of Information Science & Technology, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2011-07-02 Revised:2011-11-07 Online:2013-04-28 Published:2013-04-26
  • Supported by:

    Supported by the National Natural Science Foundation of China (61104131).

摘要: In chemical processes, fault diagnosis is relatively difficult due to the incomplete prior-knowledge and unpredictable production changes. To solve the problem, a case-based extension fault diagnosis (CEFD) method is proposed combining with extension theory, in which the basic-element model is used for the unified and deep fault description, the distance concept is applied to quantify the correlation degree between the new fault and the original fault cases, and the extension transformation is used to expand and obtain the solution of unknown faults. With the application in Tennessee Eastman process, the result indicates that CEFD method has a flexible fault representation, objective fault retrieve performance and good ability for fault study, providing a new way for diagnosing production faults accurately.

关键词: extension theory, fault case, fault diagnosis, Tennessee Eastman process

Abstract: In chemical processes, fault diagnosis is relatively difficult due to the incomplete prior-knowledge and unpredictable production changes. To solve the problem, a case-based extension fault diagnosis (CEFD) method is proposed combining with extension theory, in which the basic-element model is used for the unified and deep fault description, the distance concept is applied to quantify the correlation degree between the new fault and the original fault cases, and the extension transformation is used to expand and obtain the solution of unknown faults. With the application in Tennessee Eastman process, the result indicates that CEFD method has a flexible fault representation, objective fault retrieve performance and good ability for fault study, providing a new way for diagnosing production faults accurately.

Key words: extension theory, fault case, fault diagnosis, Tennessee Eastman process