Robust Controller Decorated by Nonlinear S Function and Its Application to Water Tank
In this manuscript, a concept of modifying the results of the existing robust controller decorated by a nonlinear S function is presented to improve the system performance. A case-based study of level control of water tanks illustrates the effectiveness of nonlinear decoration in improving robustnes...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Applied System Innovation |
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| Online Access: | https://www.mdpi.com/2571-5577/4/3/64 |
| _version_ | 1797520263328301056 |
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| author | Xianku Zhang Chunyu Song |
| author_facet | Xianku Zhang Chunyu Song |
| author_sort | Xianku Zhang |
| collection | DOAJ |
| description | In this manuscript, a concept of modifying the results of the existing robust controller decorated by a nonlinear S function is presented to improve the system performance. A case-based study of level control of water tanks illustrates the effectiveness of nonlinear decoration in improving robustness and controlling energy-saving performance with an S-function-decorated robust controller. The performance of the controlled system was analyzed through Lyapunov stability theorem and robust control theory, and was evaluated with a performance index. By demonstrating three comparing simulations of different scenes, it testifies to the fact that the nonlinear decorated robust controller meets the requirement of improving the system performance index. Compared with the nonlinear feedback and the fuzzy control, the performance index of the system using a nonlinear decorated controller is reduced by more than 10% with satisfactory robustness. This nonlinear decorated robust controller is proven to be energy efficient, simple and clear and easy to use, valuable for extensive application. |
| first_indexed | 2024-03-10T07:54:18Z |
| format | Article |
| id | doaj.art-82b47b673ca9440d9aeb9694a3402eaf |
| institution | Directory Open Access Journal |
| issn | 2571-5577 |
| language | English |
| last_indexed | 2024-03-10T07:54:18Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied System Innovation |
| spelling | doaj.art-82b47b673ca9440d9aeb9694a3402eaf2023-11-22T11:58:56ZengMDPI AGApplied System Innovation2571-55772021-09-01436410.3390/asi4030064Robust Controller Decorated by Nonlinear S Function and Its Application to Water TankXianku Zhang0Chunyu Song1Ship Dynamic Simulation and Control Laboratory, Navigation College, Dalian Maritime University, Dalian 116026, ChinaShip Dynamic Simulation and Control Laboratory, Navigation College, Dalian Maritime University, Dalian 116026, ChinaIn this manuscript, a concept of modifying the results of the existing robust controller decorated by a nonlinear S function is presented to improve the system performance. A case-based study of level control of water tanks illustrates the effectiveness of nonlinear decoration in improving robustness and controlling energy-saving performance with an S-function-decorated robust controller. The performance of the controlled system was analyzed through Lyapunov stability theorem and robust control theory, and was evaluated with a performance index. By demonstrating three comparing simulations of different scenes, it testifies to the fact that the nonlinear decorated robust controller meets the requirement of improving the system performance index. Compared with the nonlinear feedback and the fuzzy control, the performance index of the system using a nonlinear decorated controller is reduced by more than 10% with satisfactory robustness. This nonlinear decorated robust controller is proven to be energy efficient, simple and clear and easy to use, valuable for extensive application.https://www.mdpi.com/2571-5577/4/3/64S functionnonlinear decorationrobust controlwater tanklevel control |
| spellingShingle | Xianku Zhang Chunyu Song Robust Controller Decorated by Nonlinear S Function and Its Application to Water Tank Applied System Innovation S function nonlinear decoration robust control water tank level control |
| title | Robust Controller Decorated by Nonlinear S Function and Its Application to Water Tank |
| title_full | Robust Controller Decorated by Nonlinear S Function and Its Application to Water Tank |
| title_fullStr | Robust Controller Decorated by Nonlinear S Function and Its Application to Water Tank |
| title_full_unstemmed | Robust Controller Decorated by Nonlinear S Function and Its Application to Water Tank |
| title_short | Robust Controller Decorated by Nonlinear S Function and Its Application to Water Tank |
| title_sort | robust controller decorated by nonlinear s function and its application to water tank |
| topic | S function nonlinear decoration robust control water tank level control |
| url | https://www.mdpi.com/2571-5577/4/3/64 |
| work_keys_str_mv | AT xiankuzhang robustcontrollerdecoratedbynonlinearsfunctionanditsapplicationtowatertank AT chunyusong robustcontrollerdecoratedbynonlinearsfunctionanditsapplicationtowatertank |