Switched-Delay Smith Predictor for the Control of Plants with Response-Delay Asymmetry
The modification of a Smith predictor for the control of plants with response-delay asymmetry has been proposed. It was developed for application in frequency converters for the control of the speed of the AC induction motor drives of pumps used in water- and liquefied-petroleum-gas-supply systems....
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/1/258 |
| _version_ | 1797439709252681728 |
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| author | Algirdas Baskys |
| author_facet | Algirdas Baskys |
| author_sort | Algirdas Baskys |
| collection | DOAJ |
| description | The modification of a Smith predictor for the control of plants with response-delay asymmetry has been proposed. It was developed for application in frequency converters for the control of the speed of the AC induction motor drives of pumps used in water- and liquefied-petroleum-gas-supply systems. Such plants are characterized by long response delays, and often these delays are asymmetric, i.e., the response delay to the rising and falling plant-control signal is different. A distinctive feature of the proposed modification is that the value of the response delay in the model of the plant used for the realization of the Smith predictor is switched. The operation of the proposed switched-delay Smith predictor, which was used with the proportional-integral controller, was analyzed using a simulation and experimentally in a real water-supply system. The obtained results prove an advantage of the suggested solution. |
| first_indexed | 2024-03-09T11:57:00Z |
| format | Article |
| id | doaj.art-e0569ac3825b4dffb9284fd5c045bd0a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T11:57:00Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-e0569ac3825b4dffb9284fd5c045bd0a2023-11-30T23:08:24ZengMDPI AGSensors1424-82202022-12-0123125810.3390/s23010258Switched-Delay Smith Predictor for the Control of Plants with Response-Delay AsymmetryAlgirdas Baskys0Faculty of Electronics, Vilnius Gediminas Technical University, Sauletekio Av. 11, 10223 Vilnius, LithuaniaThe modification of a Smith predictor for the control of plants with response-delay asymmetry has been proposed. It was developed for application in frequency converters for the control of the speed of the AC induction motor drives of pumps used in water- and liquefied-petroleum-gas-supply systems. Such plants are characterized by long response delays, and often these delays are asymmetric, i.e., the response delay to the rising and falling plant-control signal is different. A distinctive feature of the proposed modification is that the value of the response delay in the model of the plant used for the realization of the Smith predictor is switched. The operation of the proposed switched-delay Smith predictor, which was used with the proportional-integral controller, was analyzed using a simulation and experimentally in a real water-supply system. The obtained results prove an advantage of the suggested solution.https://www.mdpi.com/1424-8220/23/1/258nonlinear control systemsasymmetric dynamicsresponse delaySmith predictorfrequency converterswater-supply systems |
| spellingShingle | Algirdas Baskys Switched-Delay Smith Predictor for the Control of Plants with Response-Delay Asymmetry Sensors nonlinear control systems asymmetric dynamics response delay Smith predictor frequency converters water-supply systems |
| title | Switched-Delay Smith Predictor for the Control of Plants with Response-Delay Asymmetry |
| title_full | Switched-Delay Smith Predictor for the Control of Plants with Response-Delay Asymmetry |
| title_fullStr | Switched-Delay Smith Predictor for the Control of Plants with Response-Delay Asymmetry |
| title_full_unstemmed | Switched-Delay Smith Predictor for the Control of Plants with Response-Delay Asymmetry |
| title_short | Switched-Delay Smith Predictor for the Control of Plants with Response-Delay Asymmetry |
| title_sort | switched delay smith predictor for the control of plants with response delay asymmetry |
| topic | nonlinear control systems asymmetric dynamics response delay Smith predictor frequency converters water-supply systems |
| url | https://www.mdpi.com/1424-8220/23/1/258 |
| work_keys_str_mv | AT algirdasbaskys switcheddelaysmithpredictorforthecontrolofplantswithresponsedelayasymmetry |