Modified Smith-predictor multirate control utilizing secondary process measurements
The Smith-predictor is a well-known control structure for industrial time delay systems, where the basic idea is to estimate the non-delayed process output by use of a process model, and to use this estimate in an inner feedback control loop combined with an outer feedback loop based on the delayed...
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Norwegian Society of Automatic Control
2007-01-01
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Online Access: | http://www.mic-journal.no/PDF/2007/MIC-2007-1-2.pdf |
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doaj-f3d6933d5c5f47b294f86cadc103e7ec2020-11-24T22:23:42ZengNorwegian Society of Automatic ControlModeling, Identification and Control0332-73531890-13282007-01-01281151810.4173/mic.2007.1.2Modified Smith-predictor multirate control utilizing secondary process measurementsRolf ErgonThe Smith-predictor is a well-known control structure for industrial time delay systems, where the basic idea is to estimate the non-delayed process output by use of a process model, and to use this estimate in an inner feedback control loop combined with an outer feedback loop based on the delayed estimation error. The model used may be either mechanistic or identified from input-output data. The paper discusses improvements of the Smith-predictor for systems where also secondary process measurements without time delay are available as a basis for the primary output estimation. The estimator may then be identified also in the common case with primary outputs sampled at a lower rate than the secondary outputs. A simulation example demonstrates the feasibility and advantages of the suggested control structure. http://www.mic-journal.no/PDF/2007/MIC-2007-1-2.pdfSmith-predictorsecondary outputs |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Rolf Ergon |
spellingShingle |
Rolf Ergon Modified Smith-predictor multirate control utilizing secondary process measurements Modeling, Identification and Control Smith-predictor secondary outputs |
author_facet |
Rolf Ergon |
author_sort |
Rolf Ergon |
title |
Modified Smith-predictor multirate control utilizing secondary process measurements |
title_short |
Modified Smith-predictor multirate control utilizing secondary process measurements |
title_full |
Modified Smith-predictor multirate control utilizing secondary process measurements |
title_fullStr |
Modified Smith-predictor multirate control utilizing secondary process measurements |
title_full_unstemmed |
Modified Smith-predictor multirate control utilizing secondary process measurements |
title_sort |
modified smith-predictor multirate control utilizing secondary process measurements |
publisher |
Norwegian Society of Automatic Control |
series |
Modeling, Identification and Control |
issn |
0332-7353 1890-1328 |
publishDate |
2007-01-01 |
description |
The Smith-predictor is a well-known control structure for industrial time delay systems, where the basic idea is to estimate the non-delayed process output by use of a process model, and to use this estimate in an inner feedback control loop combined with an outer feedback loop based on the delayed estimation error. The model used may be either mechanistic or identified from input-output data. The paper discusses improvements of the Smith-predictor for systems where also secondary process measurements without time delay are available as a basis for the primary output estimation. The estimator may then be identified also in the common case with primary outputs sampled at a lower rate than the secondary outputs. A simulation example demonstrates the feasibility and advantages of the suggested control structure. |
topic |
Smith-predictor secondary outputs |
url |
http://www.mic-journal.no/PDF/2007/MIC-2007-1-2.pdf |
work_keys_str_mv |
AT rolfergon modifiedsmithpredictormultiratecontrolutilizingsecondaryprocessmeasurements |
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1725764197509234688 |