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Constrained multi-rate state estimator incorporating delayed measurements
Published in Institute of Electrical and Electronics Engineers Inc.
2017
Pages: 358 - 363
Abstract
Frequent and accurate concentration estimates are important for the on-line control and optimization of chemical reaction systems. Such estimates can be obtained using state estimation methods that fuse frequent (fast) delay-free on-line measurements with infrequent (slow) delayed laboratory measurements. In this paper, we demonstrate how several recent advances made in state estimation can be combined in an on-line recursive state estimation framework by imposing knowledge-based and measurement-based constraints on the state estimates of multi-rate concentration measurements with time-varying time delays. This framework is illustrated using a simulated example for a bacterial batch fermentation of recombinant l. lactis. It is shown that an extent-based formulation gives more accurate estimates than a conventional concentration-based formulation. © 2017 IEEE.
About the journal
JournalData powered by TypesetProceedings of the 2017 21st International Conference on Process Control, PC 2017
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
Open AccessNo
Concepts (13)
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    Estimation
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    Knowledge based systems
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    State estimation
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    Time delay
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    BATCH FERMENTATION
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    CHEMICAL REACTION SYSTEMS
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    Concentration measurement
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    DELAYED MEASUREMENTS
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    LABORATORY MEASUREMENTS
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    ON-LINE MEASUREMENT
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    RECURSIVE STATE ESTIMATION
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    STATE ESTIMATION METHODS
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    Process control