Sliding Mode Control of Electro-Hydraulic Position Servo System Based on Adaptive Reaching Law
For the problem of the system state variable taking a long time to reach the sliding mode surface and the chattering frequency being high in the sliding mode surface, a sliding mode control method based on the adaptive reaching law is proposed, the system state variable is introduced based on the su...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/14/6897 |
| _version_ | 1797441175114743808 |
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| author | Chungeng Sun Xiangxiang Dong Mingjin Wang Jipeng Li |
| author_facet | Chungeng Sun Xiangxiang Dong Mingjin Wang Jipeng Li |
| author_sort | Chungeng Sun |
| collection | DOAJ |
| description | For the problem of the system state variable taking a long time to reach the sliding mode surface and the chattering frequency being high in the sliding mode surface, a sliding mode control method based on the adaptive reaching law is proposed, the system state variable is introduced based on the subreaching law, and an improved variable-speed reaching law is added with reference to the characteristics of the hyperbolic tangent function. The sliding mode control method is divided into two stages, namely, the initial state to the critical value <i>s</i> = ±1 and the system state variable reaching the equilibrium point of the sliding mode surface, and the total time obtained is less than the sum of these two stages. Secondly, this method is adopted in the electro-hydraulic position servo system, and a sliding mode controller is established. Through an AMESim/Simulink co-simulation, it is compared with the sliding mode controller based on the traditional exponential reaching law. The results show that this method can effectively reduce the jitter of the system, reduce the time for the system to reach the sliding surface, and improve the robustness of the system. |
| first_indexed | 2024-03-09T12:19:12Z |
| format | Article |
| id | doaj.art-c02f5f6de2014c62ad625c985dd75eed |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T12:19:12Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-c02f5f6de2014c62ad625c985dd75eed2023-11-30T22:43:22ZengMDPI AGApplied Sciences2076-34172022-07-011214689710.3390/app12146897Sliding Mode Control of Electro-Hydraulic Position Servo System Based on Adaptive Reaching LawChungeng Sun0Xiangxiang Dong1Mingjin Wang2Jipeng Li3Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFor the problem of the system state variable taking a long time to reach the sliding mode surface and the chattering frequency being high in the sliding mode surface, a sliding mode control method based on the adaptive reaching law is proposed, the system state variable is introduced based on the subreaching law, and an improved variable-speed reaching law is added with reference to the characteristics of the hyperbolic tangent function. The sliding mode control method is divided into two stages, namely, the initial state to the critical value <i>s</i> = ±1 and the system state variable reaching the equilibrium point of the sliding mode surface, and the total time obtained is less than the sum of these two stages. Secondly, this method is adopted in the electro-hydraulic position servo system, and a sliding mode controller is established. Through an AMESim/Simulink co-simulation, it is compared with the sliding mode controller based on the traditional exponential reaching law. The results show that this method can effectively reduce the jitter of the system, reduce the time for the system to reach the sliding surface, and improve the robustness of the system.https://www.mdpi.com/2076-3417/12/14/6897buffeting frequencyhyperbolic tangent functionadaptive reaching lawsliding mode variable structure controlelectro-hydraulic servo system |
| spellingShingle | Chungeng Sun Xiangxiang Dong Mingjin Wang Jipeng Li Sliding Mode Control of Electro-Hydraulic Position Servo System Based on Adaptive Reaching Law Applied Sciences buffeting frequency hyperbolic tangent function adaptive reaching law sliding mode variable structure control electro-hydraulic servo system |
| title | Sliding Mode Control of Electro-Hydraulic Position Servo System Based on Adaptive Reaching Law |
| title_full | Sliding Mode Control of Electro-Hydraulic Position Servo System Based on Adaptive Reaching Law |
| title_fullStr | Sliding Mode Control of Electro-Hydraulic Position Servo System Based on Adaptive Reaching Law |
| title_full_unstemmed | Sliding Mode Control of Electro-Hydraulic Position Servo System Based on Adaptive Reaching Law |
| title_short | Sliding Mode Control of Electro-Hydraulic Position Servo System Based on Adaptive Reaching Law |
| title_sort | sliding mode control of electro hydraulic position servo system based on adaptive reaching law |
| topic | buffeting frequency hyperbolic tangent function adaptive reaching law sliding mode variable structure control electro-hydraulic servo system |
| url | https://www.mdpi.com/2076-3417/12/14/6897 |
| work_keys_str_mv | AT chungengsun slidingmodecontrolofelectrohydraulicpositionservosystembasedonadaptivereachinglaw AT xiangxiangdong slidingmodecontrolofelectrohydraulicpositionservosystembasedonadaptivereachinglaw AT mingjinwang slidingmodecontrolofelectrohydraulicpositionservosystembasedonadaptivereachinglaw AT jipengli slidingmodecontrolofelectrohydraulicpositionservosystembasedonadaptivereachinglaw |