Journal
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS
Volume 32, Issue 8, Pages 3330-3341Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNNLS.2019.2958184
Keywords
Data models; Big Data; Stochastic processes; Industrial plants; Distributed parallel semisupervised Gaussian mixture model (dp-S(2)GMM); hierarchical quality monitoring (HQM); industrial big data analytics; plant-wide process; stochastic variational inference (SVI)
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Funding
- National Natural Science Foundation of China (NSFC) [61833014, 61722310]
- Natural Science Foundation of Zhejiang Province [LR18F030001]
- Postdoctoral Science Foundation of Zhejiang Province [zj2019008]
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This article introduces a hierarchical quality monitoring (HQM) algorithm based on the distributed parallel semisupervised Gaussian mixture model (dp-S(2)GMM) for large-scale industrial plants, which decomposes the process into unit blocks and builds a quality regression model with multimode big process data. The proposed algorithm enables hierarchical fault detection and diagnosis from variable level to plant-wide level.
For large-scale industrial plants, quality-related process monitoring is challenging because of the complex features of multiunit, multimode, high-dimension data. Hence, a hierarchical quality monitoring (HQM) algorithm based on the distributed parallel semisupervised Gaussian mixture model (dp-S(2)GMM) is proposed in this article. In HQM, a large-scale process is first decomposed into a group of unit blocks according to the process structure. Subsequently, in each block, a quality regression model with multimode big process data is built using the dp-S(2)GMM, which is derived from a scalable stochastic variational inference semisupervised GMM (SVI-S(2)GMM). With the regression model, a hierarchical fault detection and diagnosis scheme in both quality-related and quality-unrelated subspaces is proposed from the variable level, block level to plant-wide level. Finally, an industrial case study on the Tennessee Eastman process demonstrates the feasibility and effectiveness of the proposed HQM algorithm.
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