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Monitoring batch pr...
Monitoring batch processes with dynamic time warping and k-nearest neighbours
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- Spooner, Max (författare)
- DTU Compute, Technical University of Denmark, Kgs. Lyngby, Denmark
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- Kulahci, Murat (författare)
- Luleå tekniska universitet,Industriell Ekonomi,DTU Compute, Technical University of Denmark, Kgs. Lyngby, Denmark
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DTU Compute, Technical University of Denmark, Kgs Lyngby, Denmark Industriell Ekonomi (creator_code:org_t)
- Elsevier, 2018
- 2018
- Engelska.
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Ingår i: Chemometrics and Intelligent Laboratory Systems. - : Elsevier. - 0169-7439 .- 1873-3239. ; 183, s. 102-112
- Relaterad länk:
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https://backend.orbi...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A novel data driven approach to batch process monitoring is presented, which combines the k-Nearest Neighbour rule with the dynamic time warping (DTW) distance. This online method (DTW-NN) calculates the DTW distance between an ongoing batch, and each batch in a reference database of batches produced under normal operating conditions (NOC). The sum of the k smallest DTW distances is monitored. If a fault occurs in the ongoing batch, then this distance increases and an alarm is generated. The monitoring statistic is easy to interpret, being a direct measure of similarity of the ongoing batch to its nearest NOC predecessors and the method makes no distributional assumptions regarding normal operating conditions. DTW-NN is applied to four extensive datasets from simulated batch production of penicillin, and tested on a wide variety of fault types, magnitudes and onset times. Performance of DTW-NN is contrasted with a benchmark multiway PCA approach, and DTW-NN is shown to perform particularly well when there is clustering of batches under NOC.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Tillförlitlighets- och kvalitetsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Reliability and Maintenance (hsv//eng)
Nyckelord
- Batch process
- Dynamic time warping
- Nearest neighbours
- Pensim
- Kvalitetsteknik
- Quality Technology & Management
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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