| 复杂故障判定的基于结构化残差的多层次分析法 |
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| 引用本文： | 叶鲁彬,石向荣,梁军.复杂故障判定的基于结构化残差的多层次分析法[J].中国化学工程学报,2011,19(3):462-472. |
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| 作者姓名： | 叶鲁彬 石向荣 梁军 |
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| 作者单位： | State Key Laboratory of Industrial Control Technology, Institute of Industrial Control Zhejiang University, Hangzhou 310027, China |
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| 基金项目： | 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) |
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| 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.
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| 关 键 词： | multi-level structured residuals principal component analysis complex fault isolation Tennessee Eastman process |
| 收稿时间： | 2010-9-29 |
| 修稿时间： | 2010-9-29
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A multi-level approach for complex fault isolation based on structured residuals |
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| YE Lubin,SHI Xiangrong,LIANG Jun.A multi-level approach for complex fault isolation based on structured residuals[J].Chinese Journal of Chemical Engineering,2011,19(3):462-472. |
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| Authors: | YE Lubin SHI Xiangrong LIANG Jun |
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| Affiliation: | State Key Laboratory of Industrial Control Technology, Institute of Industrial Control Zhejiang University, Hangzhou 310027, China |
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| 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. |
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| Keywords: | multi-level structured residuals principal component analysis complex fault isolation Tennessee Eastman process |
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