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·360. 智能系统学报 第10卷 每一个故障的排序概率为该故障数据的概率分[4]REPPA V,TZES A.Fault detection and diagnosis based on 布,一般情况下,可以认为正确故障的概率分布大于 parameter set estimation[J].IET Control Theory and Appli- 50%时(排在第一位),则诊断结果正确。所有故障 cations,2011,5(1):69-83. 诊断结果与贝叶斯网络诊断结果[I6)对比如表4所[S]DARWISH H A,TAALAB A MI,KAWADY T A.Develop- 示。从结果看出DUCG针对20个故障的诊断都取得 ment and implementation of an ANN-based fault diagnosis 了正确的结果,所有故障的排序概率均高于50%,诊 scheme for generator winding protection[J].IEEE Transac- 断正确概率均达到100%:与贝叶斯网络诊断结果相 tions on Power Delivery,2001,16(2):208-214. 比,DUCG诊断正确概率都要优于贝叶斯网络,尤其[6]MOREIRA M P,SANTOS L T B,VELLASCO MM B R. 是故障3、9、15及18的诊断结果,DUCG要远远优于 Power transformers diagnosis using neural networks[C]//In- 贝叶斯网络。 ternational Joint Conference on Neural Networks.Orlando, USA,2007:1929-1934. 4结束语 [7]FERRACUTI F,GIANTOMASSI A.LONGHI S,et al. 本文将DUCG用于化工系统的故障诊断,以TE Multi-scale PCA based fault diagnosis on a paper mill plant 过程作为实验对象,针对化工系统特性重新编译了 [C]//2011 IEEE Conference on Emerging Technologies DUCG数据发送模块,调整构建了包含54个变量的 Factory Automation.Toulouse,France,2011:1-8 TE过程知识库,并取得了不错的故障诊断效果。 [8]ZHAO XX,YUN Y X.A fault diagnosis method combined 通过分析实验结果,可以发现DUCG理论在故 fuzzy logic with CMAC neural network for power transformers 障诊断领域的优势:I)DUCG可以随着时间的变化而 [C]//Chinese Conference on Pattern Recognition.Nanjing, 变化,清晰地展示故障的传递过程。2)DUCG可以实 China,2009:1-5. 现实时的故障诊断,其实时性对实际的化工过程有着 [9]LAU C K,CHOSH K.HUSSAIN MA,et al.Fault diagnosis 重要的意义。3)可以将系统拆分由不同的领域专家 of Tennessee Eastman process with multi-scale PCA and AN- 建立子DUCG,这样不仅有助于简化大型复杂系统的 FIS[J].Chemometrics and Intelligent Laboratory Systems, 2013,120:1-14. 建立,同时也使构建的DUCG系统更加精确。作为 一种基于知识的理论,DUCG也存在着一些缺点,例 []KARIMI I.SALAHSHOOR K.A new fault detection and di- 如依赖于专家知识等。目前DUCG动态诊断方法基 agnosis approach for a distillation column based on a com- bined PCA and ANFIS scheme C]//2012 24th Chinese 于每个时间片的化简DUCG都包含真实故障的假 Control and Decision Conference.Taiyuan,China,2012: 设。这对建造DUCG知识库提出了很高的要求。针 3408-3413. 对这一缺点,一种新的称为立体DUCG的算法正在 [11]CHEN X Y,YAN X F.Using improved self-organizing map 开发当中。 for fault diagnosis in chemical industry process[J].Chemi- 参考文献: cal Engineering Research and Design,2012,90(12): 2262-2277. [1]ABDULGHAFOUR M,EL-GANAL M A.A fuzzy logic sys- [12]DONG C L,WANG Y J,ZHANG Q,et al.The methodolo- tem for analog fault diagnosis[C]//1996 IEEE International gy of dynamic uncertain causality graph for intelligent diag- Symposium on Circuits and Systems.Atlanta,USA,1996: nosis of vertigo[]].Computer Methods and Programs in Bio- 97-100. medicine,2014.113(1):162.174. [2]ICHALAL D,MARX B.RAGOT J.et al.An approach for [13]ZHANG Qin,DONG Chunling,CUI Yan,et al.Dynamic the state estimation of Takagi-Sugeno models and application uncertain causality graph for knowledge representation and to sensor fault diagnosis[C]//Proceedings of the 48th IEEE probabilistic reasoning:statistics base,matrix,and applica- Conference on Decision and Control,Jointly with the 28th tion[J].IEEE Transactions on Neural Networks and Learn- Chinese Control Conference.Shanghai,China,2009:7789- ing System,2014,25(4):645-663. 7794. [14]杨佳婧,张勤,朱群雄.动态不确定因果图在化工过程 [3]BACHIR S,TNANI S,TRIGEASSOU J C,et al.Diagnosis 故障诊断中的应用[J].智能系统学报,2014,9(2): by parameter estimation of stator and rotor faults occurring in 154-160 induction machines J.IEEE Transactions on Industrial E- YANG Jiajing,ZHANG Qin,ZHU Qunxiong.Application of lectronics,2006.53(3):963-973 dynamic uncertain causality graph to fault diagnosis in chem-每一个故障的排序概率为该故障数据的概率分 布,一般情况下,可以认为正确故障的概率分布大于 50%时(排在第一位),则诊断结果正确。 所有故障 诊断结果与贝叶斯网络诊断结果[16] 对比如表 4 所 示。 从结果看出 DUCG 针对 20 个故障的诊断都取得 了正确的结果,所有故障的排序概率均高于 50%,诊 断正确概率均达到 100%;与贝叶斯网络诊断结果相 比,DUCG 诊断正确概率都要优于贝叶斯网络,尤其 是故障 3、9、15 及 18 的诊断结果,DUCG 要远远优于 贝叶斯网络。 4 结束语 本文将 DUCG 用于化工系统的故障诊断,以 TE 过程作为实验对象,针对化工系统特性重新编译了 DUCG 数据发送模块,调整构建了包含 54 个变量的 TE 过程知识库,并取得了不错的故障诊断效果。 通过分析实验结果,可以发现 DUCG 理论在故 障诊断领域的优势:1)DUCG 可以随着时间的变化而 变化,清晰地展示故障的传递过程。 2)DUCG 可以实 现实时的故障诊断,其实时性对实际的化工过程有着 重要的意义。 3)可以将系统拆分由不同的领域专家 建立子 DUCG,这样不仅有助于简化大型复杂系统的 建立,同时也使构建的 DUCG 系统更加精确。 作为 一种基于知识的理论,DUCG 也存在着一些缺点,例 如依赖于专家知识等。 目前 DUCG 动态诊断方法基 于每个时间片的化简 DUCG 都包含真实故障的假 设。 这对建造 DUCG 知识库提出了很高的要求。 针 对这一缺点,一种新的称为立体 DUCG 的算法正在 开发当中。 参考文献: [1]ABDULGHAFOUR M, EL⁃GANAL M A. A fuzzy logic sys⁃ tem for analog fault diagnosis[C] / / 1996 IEEE International Symposium on Circuits and Systems. Atlanta, USA, 1996: 97⁃100. [2]ICHALAL D, MARX B, RAGOT J, et al. An approach for the state estimation of Takagi⁃Sugeno models and application to sensor fault diagnosis[C] / / Proceedings of the 48th IEEE Conference on Decision and Control, Jointly with the 28th Chinese Control Conference. Shanghai, China, 2009: 7789⁃ 7794. [3]BACHIR S, TNANI S, TRIGEASSOU J C, et al. Diagnosis by parameter estimation of stator and rotor faults occurring in induction machines[ J]. IEEE Transactions on Industrial E⁃ lectronics, 2006, 53(3): 963⁃973. [4]REPPA V, TZES A. Fault detection and diagnosis based on parameter set estimation[ J]. IET Control Theory and Appli⁃ cations, 2011, 5(1): 69⁃83. [5]DARWISH H A, TAALAB A M I, KAWADY T A. Develop⁃ ment and implementation of an ANN⁃based fault diagnosis scheme for generator winding protection[ J]. IEEE Transac⁃ tions on Power Delivery, 2001, 16(2): 208⁃214. [6] MOREIRA M P, SANTOS L T B, VELLASCO M M B R. Power transformers diagnosis using neural networks[C] / / In⁃ ternational Joint Conference on Neural Networks. Orlando, USA, 2007: 1929⁃1934. [7 ] FERRACUTI F, GIANTOMASSI A, LONGHI S, et al. Multi⁃scale PCA based fault diagnosis on a paper mill plant [C] / / 2011 IEEE Conference on Emerging Technologies & Factory Automation. Toulouse, France, 2011: 1⁃8. [8]ZHAO X X, YUN Y X. A fault diagnosis method combined fuzzy logic with CMAC neural network for power transformers [C] / / Chinese Conference on Pattern Recognition. Nanjing, China, 2009: 1⁃5. [9]LAU C K, GHOSH K, HUSSAIN M A, et al. Fault diagnosis of Tennessee Eastman process with multi⁃scale PCA and AN⁃ FIS[ J]. Chemometrics and Intelligent Laboratory Systems, 2013, 120: 1⁃14. [10]KARIMI I, SALAHSHOOR K. A new fault detection and di⁃ agnosis approach for a distillation column based on a com⁃ bined PCA and ANFIS scheme [ C] / / 2012 24th Chinese Control and Decision Conference. Taiyuan, China, 2012: 3408⁃3413. [11]CHEN X Y, YAN X F. Using improved self⁃organizing map for fault diagnosis in chemical industry process[ J]. Chemi⁃ cal Engineering Research and Design, 2012, 90 ( 12 ): 2262⁃2277. [12]DONG C L, WANG Y J, ZHANG Q, et al. The methodolo⁃ gy of dynamic uncertain causality graph for intelligent diag⁃ nosis of vertigo[J]. Computer Methods and Programs in Bio⁃ medicine, 2014, 113(1): 162⁃174. [13]ZHANG Qin, DONG Chunling, CUI Yan, et al. Dynamic uncertain causality graph for knowledge representation and probabilistic reasoning: statistics base, matrix, and applica⁃ tion[J]. IEEE Transactions on Neural Networks and Learn⁃ ing Systems, 2014, 25(4): 645⁃663. [14]杨佳婧, 张勤, 朱群雄. 动态不确定因果图在化工过程 故障诊断中的应用[ J]. 智能系统学报, 2014, 9 ( 2): 154⁃160. YANG Jiajing, ZHANG Qin, ZHU Qunxiong. Application of dynamic uncertain causality graph to fault diagnosis in chem⁃ ·360· 智 能 系 统 学 报 第 10 卷
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