Finite-Time Output Feedback Control for Electro-Hydraulic Servo Systems with Parameter Adaptation
Measurement noise, parametric uncertainties, and external disturbances broadly exist in electro-hydraulic servo systems, which terribly deteriorate the system control performance. To figure out this problem, a novel finite-time output feedback controller with parameter adaptation is proposed for ele...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/9/10/214 |
| _version_ | 1797514112163381248 |
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| author | Luyue Yin Wenxiang Deng Xiaowei Yang Jianyong Yao |
| author_facet | Luyue Yin Wenxiang Deng Xiaowei Yang Jianyong Yao |
| author_sort | Luyue Yin |
| collection | DOAJ |
| description | Measurement noise, parametric uncertainties, and external disturbances broadly exist in electro-hydraulic servo systems, which terribly deteriorate the system control performance. To figure out this problem, a novel finite-time output feedback controller with parameter adaptation is proposed for electro-hydraulic servo systems in this paper. First, to avoid using noise-polluted signals and attain active disturbance compensation, a finite-time state observer is adopted to estimate unknown system states and disturbances, which attenuates the impact of measurement noise and external disturbances on tracking performance. Second, by adopting a parameter adaptive law, the parametric uncertainties in the electro-hydraulic servo system can be much lessened, which is beneficial to averting the high-gain feedback in practice. Then, integrating the backstepping framework and the super-twisting sliding mode technique, a synthesized output feedback controller is constructed to achieve high-accuracy tracking performance for electro-hydraulic servo systems. Lyapunov stability analysis demonstrates that the proposed control scheme can acquire finite-time stability. The excellent tracking performance of the designed control law is verified by comparative simulation results. |
| first_indexed | 2024-03-10T06:27:01Z |
| format | Article |
| id | doaj.art-846eea03ab8d4d048dd43c17b2401cee |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-10T06:27:01Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-846eea03ab8d4d048dd43c17b2401cee2023-11-22T18:54:10ZengMDPI AGMachines2075-17022021-09-0191021410.3390/machines9100214Finite-Time Output Feedback Control for Electro-Hydraulic Servo Systems with Parameter AdaptationLuyue Yin0Wenxiang Deng1Xiaowei Yang2Jianyong Yao3School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaMeasurement noise, parametric uncertainties, and external disturbances broadly exist in electro-hydraulic servo systems, which terribly deteriorate the system control performance. To figure out this problem, a novel finite-time output feedback controller with parameter adaptation is proposed for electro-hydraulic servo systems in this paper. First, to avoid using noise-polluted signals and attain active disturbance compensation, a finite-time state observer is adopted to estimate unknown system states and disturbances, which attenuates the impact of measurement noise and external disturbances on tracking performance. Second, by adopting a parameter adaptive law, the parametric uncertainties in the electro-hydraulic servo system can be much lessened, which is beneficial to averting the high-gain feedback in practice. Then, integrating the backstepping framework and the super-twisting sliding mode technique, a synthesized output feedback controller is constructed to achieve high-accuracy tracking performance for electro-hydraulic servo systems. Lyapunov stability analysis demonstrates that the proposed control scheme can acquire finite-time stability. The excellent tracking performance of the designed control law is verified by comparative simulation results.https://www.mdpi.com/2075-1702/9/10/214motion controlfinite time controloutput feedbackparameter adaptionelectro-hydraulic servo valvemodelling |
| spellingShingle | Luyue Yin Wenxiang Deng Xiaowei Yang Jianyong Yao Finite-Time Output Feedback Control for Electro-Hydraulic Servo Systems with Parameter Adaptation Machines motion control finite time control output feedback parameter adaption electro-hydraulic servo valve modelling |
| title | Finite-Time Output Feedback Control for Electro-Hydraulic Servo Systems with Parameter Adaptation |
| title_full | Finite-Time Output Feedback Control for Electro-Hydraulic Servo Systems with Parameter Adaptation |
| title_fullStr | Finite-Time Output Feedback Control for Electro-Hydraulic Servo Systems with Parameter Adaptation |
| title_full_unstemmed | Finite-Time Output Feedback Control for Electro-Hydraulic Servo Systems with Parameter Adaptation |
| title_short | Finite-Time Output Feedback Control for Electro-Hydraulic Servo Systems with Parameter Adaptation |
| title_sort | finite time output feedback control for electro hydraulic servo systems with parameter adaptation |
| topic | motion control finite time control output feedback parameter adaption electro-hydraulic servo valve modelling |
| url | https://www.mdpi.com/2075-1702/9/10/214 |
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