Discrete Near-Optimal Wave Disturbances Rejection Control for Offshore Platforms With Delays in Measurement and Actuator
The wave disturbances rejection control problem for linear discrete jacket-type offshore platforms with delays in measurement and actuator is studied. Taken the delays in measurement and actuator into account, the linear model of the jacket-type offshore platform is established in discrete domain, i...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8445555/ |
| _version_ | 1819320566094495744 |
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| author | Yong-Zheng Lin Hong Liu Zhen-Xiang Chen |
| author_facet | Yong-Zheng Lin Hong Liu Zhen-Xiang Chen |
| author_sort | Yong-Zheng Lin |
| collection | DOAJ |
| description | The wave disturbances rejection control problem for linear discrete jacket-type offshore platforms with delays in measurement and actuator is studied. Taken the delays in measurement and actuator into account, the linear model of the jacket-type offshore platform is established in discrete domain, in which the external wave forces are generated from a designed exosystem based on the JONSWAP wave spectrum and linearized wave theory. A delay-free model from the model of the jacket-type offshore platform with delays in measurement and actuator is formulated based on a designed discrete transformation vector, and the system output with delays in measurement is reformed into a corresponding delay-free form. Then, the discrete near-optimal wave disturbances rejection controller (NOWDRC) is derived from the reformed delay-free system and the corresponding system output in respect of an average quadratic performance index, which is made up of a system state feedback item, a wave disturbances feedforward item and a controller memory item. Finally, simulation results demonstrate that the system output under proposed NOWDRC, including the displacement and velocity of the jacket-type offshore platform, can be offset to smaller values than those under a classic feedback optimal vibration controller, and the delays in measurement and actuator can be compensated effectively. |
| first_indexed | 2024-12-24T11:21:37Z |
| format | Article |
| id | doaj.art-3af567fd23704f50aa1ff69d29e4acfa |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-24T11:21:37Z |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-3af567fd23704f50aa1ff69d29e4acfa2022-12-21T16:58:14ZengIEEEIEEE Access2169-35362018-01-016496374964510.1109/ACCESS.2018.28669088445555Discrete Near-Optimal Wave Disturbances Rejection Control for Offshore Platforms With Delays in Measurement and ActuatorYong-Zheng Lin0Hong Liu1Zhen-Xiang Chen2School of Information Science and Engineering, Shandong Normal University, Jinan, ChinaSchool of Information Science and Engineering, Shandong Normal University, Jinan, ChinaProvincial Key Laboratory of Network Based Intelligent Computing, University of Jinan, Jinan, ChinaThe wave disturbances rejection control problem for linear discrete jacket-type offshore platforms with delays in measurement and actuator is studied. Taken the delays in measurement and actuator into account, the linear model of the jacket-type offshore platform is established in discrete domain, in which the external wave forces are generated from a designed exosystem based on the JONSWAP wave spectrum and linearized wave theory. A delay-free model from the model of the jacket-type offshore platform with delays in measurement and actuator is formulated based on a designed discrete transformation vector, and the system output with delays in measurement is reformed into a corresponding delay-free form. Then, the discrete near-optimal wave disturbances rejection controller (NOWDRC) is derived from the reformed delay-free system and the corresponding system output in respect of an average quadratic performance index, which is made up of a system state feedback item, a wave disturbances feedforward item and a controller memory item. Finally, simulation results demonstrate that the system output under proposed NOWDRC, including the displacement and velocity of the jacket-type offshore platform, can be offset to smaller values than those under a classic feedback optimal vibration controller, and the delays in measurement and actuator can be compensated effectively.https://ieeexplore.ieee.org/document/8445555/Jacket-type offshore platformoptimal vibration controlirregular wave forcedelays in measurement and actuator |
| spellingShingle | Yong-Zheng Lin Hong Liu Zhen-Xiang Chen Discrete Near-Optimal Wave Disturbances Rejection Control for Offshore Platforms With Delays in Measurement and Actuator IEEE Access Jacket-type offshore platform optimal vibration control irregular wave force delays in measurement and actuator |
| title | Discrete Near-Optimal Wave Disturbances Rejection Control for Offshore Platforms With Delays in Measurement and Actuator |
| title_full | Discrete Near-Optimal Wave Disturbances Rejection Control for Offshore Platforms With Delays in Measurement and Actuator |
| title_fullStr | Discrete Near-Optimal Wave Disturbances Rejection Control for Offshore Platforms With Delays in Measurement and Actuator |
| title_full_unstemmed | Discrete Near-Optimal Wave Disturbances Rejection Control for Offshore Platforms With Delays in Measurement and Actuator |
| title_short | Discrete Near-Optimal Wave Disturbances Rejection Control for Offshore Platforms With Delays in Measurement and Actuator |
| title_sort | discrete near optimal wave disturbances rejection control for offshore platforms with delays in measurement and actuator |
| topic | Jacket-type offshore platform optimal vibration control irregular wave force delays in measurement and actuator |
| url | https://ieeexplore.ieee.org/document/8445555/ |
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