Journal
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS
Volume 32, Issue 8, Pages 3355-3365Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNNLS.2020.2985223
Keywords
Monitoring; Kernel; Computational modeling; Fault detection; Correlation; Principal component analysis; Big Data; Deep neural network (DNN); distributed computing; industrial big data; local-global modeling; nonlinear plant-wide processes
Categories
Funding
- National Natural Science Foundation of China [61973119, 61603138, 21878081]
- Natural Science Foundation of Shanghai [16ZR1407300]
- Program of Introducing Talents of Discipline to Universities through the 111 Project [B17017]
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This article proposes a local-global modeling and distributed computing framework for efficient fault detection and isolation in nonlinear plant-wide processes. With the use of stacked autoencoders and mutual information, dominant representations are extracted, neighborhood variables are determined, and monitors are established to achieve global monitoring systems. The feasibility of the method is demonstrated through application to the Tennessee Eastman (TE) and laboratory-scale glycerol distillation processes.
Industrial big data and complex process nonlinearity have introduced new challenges in plant-wide process monitoring. This article proposes a local-global modeling and distributed computing framework to achieve efficient fault detection and isolation for nonlinear plant-wide processes. First, a stacked autoencoder is used to extract dominant representations of each local process unit and establish the local inner monitor. Second, mutual information (MI) is used to determine the neighborhood variables of a local unit. Afterward, a joint representation learning is then performed between the local unit and the neighborhood variables to extract the outer-related representations and establish the outer-related monitor for the local unit. Finally, the outer-related representations from all process units are used to establish global monitoring systems. Given that the modeling of each unit can be performed individually, the computation process can be efficiently completed with different CPUs. The proposed modeling and monitoring method is applied to the Tennessee Eastman (TE) and laboratory-scale glycerol distillation processes to demonstrate the feasibility of the method.
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