A Multi-level Approach for Complex Fault Isolation Based on Structured Residuals

›› 2011, Vol. 19 ›› Issue (3): 462-472.

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A Multi-level Approach for Complex Fault Isolation Based on Structured Residuals

YE Lubin, SHI Xiangrong, LIANG Jun

State Key Laboratory of Industrial Control Technology, Institute of Industrial Control Zhejiang University, Hangzhou 310027, China

Received:2010-09-29 Revised:2011-03-15 Online:2011-06-28 Published:2011-06-28
Supported by:
Supported by the National Natural Science Foundation of China(60574047);the National High Technology Research and Development Program of China(2007AA04Z168,2009AA04Z154);the Research Fund for the Doctoral Program of Higher Education in China(20050335018)

A Multi-level Approach for Complex Fault Isolation Based on Structured Residuals

叶鲁彬, 石向荣, 梁军

State Key Laboratory of Industrial Control Technology, Institute of Industrial Control Zhejiang University, Hangzhou 310027, China

通讯作者: LIANG Jun, E-mail: jliang@iipc.zju.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China(60574047);the National High Technology Research and Development Program of China(2007AA04Z168,2009AA04Z154);the Research Fund for the Doctoral Program of Higher Education in China(20050335018)

Abstract

Abstract: In industrial processes,there exist faults that have complex effect on process variables.Complex and simple faults are defined according to their effect dimensions.The conventional approaches based on structured residuals cannot isolate complex faults.This paper presents a multi-level strategy for complex fault isolation.An extraction procedure is employed to reduce the complex faults to simple ones and assign them to several levels.On each level,faults are isolated by their different responses in the structured residuals.Each residual is obtained insensitive to one fault but more sensitive to others.The faults on different levels are verified to have different residual responses and will not be confused.An entire incidence matrix containing residual response characteristics of all faults is obtained,based on which faults can be isolated.The proposed method is applied in the Tennessee Eastman process example,and the effectiveness and advantage are demonstrated.

Key words: multi-level, structured residuals, principal component analysis, complex fault isolation, Tennessee Eastman process

摘要： In industrial processes,there exist faults that have complex effect on process variables.Complex and simple faults are defined according to their effect dimensions.The conventional approaches based on structured residuals cannot isolate complex faults.This paper presents a multi-level strategy for complex fault isolation.An extraction procedure is employed to reduce the complex faults to simple ones and assign them to several levels.On each level,faults are isolated by their different responses in the structured residuals.Each residual is obtained insensitive to one fault but more sensitive to others.The faults on different levels are verified to have different residual responses and will not be confused.An entire incidence matrix containing residual response characteristics of all faults is obtained,based on which faults can be isolated.The proposed method is applied in the Tennessee Eastman process example,and the effectiveness and advantage are demonstrated.

关键词: multi-level, structured residuals, principal component analysis, complex fault isolation, Tennessee Eastman process

YE Lubin, SHI Xiangrong, LIANG Jun. A Multi-level Approach for Complex Fault Isolation Based on Structured Residuals[J]. , 2011, 19(3): 462-472.

叶鲁彬, 石向荣, 梁军. A Multi-level Approach for Complex Fault Isolation Based on Structured Residuals[J]. , 2011, 19(3): 462-472.

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A Multi-level Approach for Complex Fault Isolation Based on Structured Residuals

A Multi-level Approach for Complex Fault Isolation Based on Structured Residuals

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