System Identification of a Servo-Valve Controlled Hydraulic Cylinder Operating Under Variable Load
This work presents an in-depth study on the system identification of a servo-valve controlled hydraulic cylinder operating under variable load. This research addresses the growing demand for improved control systems (enhancing time response, settling time, and precision) in variable load hydraulic a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Mathematics |
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| Online Access: | https://www.mdpi.com/2227-7390/13/3/341 |
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| author | Daniel Catalin Stroita Dorin Bordeasu Florin Dragan |
| author_facet | Daniel Catalin Stroita Dorin Bordeasu Florin Dragan |
| author_sort | Daniel Catalin Stroita |
| collection | DOAJ |
| description | This work presents an in-depth study on the system identification of a servo-valve controlled hydraulic cylinder operating under variable load. This research addresses the growing demand for improved control systems (enhancing time response, settling time, and precision) in variable load hydraulic actuators, such as those used in blade pitching systems of wind turbines. The paper begins by detailing the experimental setup, followed by the development of the system’s mathematical model, a fourth-order transfer function (TF). The experimental data collected by a proposed data acquisition system are used for the dynamic identification of the hydraulic setup using periodical signals as commands. All possible combinations of TFs up to order 8 are identified. After an initial visual preselection of the 15 most accurate ones, analyses comparing quality indicators between the measured (experimental) and the TF (simulated) step and sinusoidal responses are conducted to determine the most accurate TF. The paper concludes with the presentation and analysis of the dynamic model, identified as being a fourth-order TF, which replicates the system dynamics with the greatest fidelity. It provides an identification methodology with significant potential for industry practitioners aiming to improve, optimize, and enhance control strategies for variable load hydraulic actuators. |
| format | Article |
| id | doaj-art-a7c70e52ae4e4907ac8f37e8c668b855 |
| institution | DOAJ |
| issn | 2227-7390 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Mathematics |
| spelling | doaj-art-a7c70e52ae4e4907ac8f37e8c668b8552025-08-20T02:48:06ZengMDPI AGMathematics2227-73902025-01-0113334110.3390/math13030341System Identification of a Servo-Valve Controlled Hydraulic Cylinder Operating Under Variable LoadDaniel Catalin Stroita0Dorin Bordeasu1Florin Dragan2Department of Mechanical Machines, Machinery and Transport, Faculty of Mechanical Engineering, Politehnica University of Timisoara, Bulevardul Mihai Viteazu, No. 1, 300222 Timisoara, RomaniaDepartment of Automation and Applied Informatics, Politehnica University of Timisoara, Vasile Parvan, No. 2, 300223 Timisoara, RomaniaDepartment of Automation and Applied Informatics, Politehnica University of Timisoara, Vasile Parvan, No. 2, 300223 Timisoara, RomaniaThis work presents an in-depth study on the system identification of a servo-valve controlled hydraulic cylinder operating under variable load. This research addresses the growing demand for improved control systems (enhancing time response, settling time, and precision) in variable load hydraulic actuators, such as those used in blade pitching systems of wind turbines. The paper begins by detailing the experimental setup, followed by the development of the system’s mathematical model, a fourth-order transfer function (TF). The experimental data collected by a proposed data acquisition system are used for the dynamic identification of the hydraulic setup using periodical signals as commands. All possible combinations of TFs up to order 8 are identified. After an initial visual preselection of the 15 most accurate ones, analyses comparing quality indicators between the measured (experimental) and the TF (simulated) step and sinusoidal responses are conducted to determine the most accurate TF. The paper concludes with the presentation and analysis of the dynamic model, identified as being a fourth-order TF, which replicates the system dynamics with the greatest fidelity. It provides an identification methodology with significant potential for industry practitioners aiming to improve, optimize, and enhance control strategies for variable load hydraulic actuators.https://www.mdpi.com/2227-7390/13/3/341experimental identificationmathematical modelhydraulic systemservo-valvehydraulic cylindervariable load |
| spellingShingle | Daniel Catalin Stroita Dorin Bordeasu Florin Dragan System Identification of a Servo-Valve Controlled Hydraulic Cylinder Operating Under Variable Load Mathematics experimental identification mathematical model hydraulic system servo-valve hydraulic cylinder variable load |
| title | System Identification of a Servo-Valve Controlled Hydraulic Cylinder Operating Under Variable Load |
| title_full | System Identification of a Servo-Valve Controlled Hydraulic Cylinder Operating Under Variable Load |
| title_fullStr | System Identification of a Servo-Valve Controlled Hydraulic Cylinder Operating Under Variable Load |
| title_full_unstemmed | System Identification of a Servo-Valve Controlled Hydraulic Cylinder Operating Under Variable Load |
| title_short | System Identification of a Servo-Valve Controlled Hydraulic Cylinder Operating Under Variable Load |
| title_sort | system identification of a servo valve controlled hydraulic cylinder operating under variable load |
| topic | experimental identification mathematical model hydraulic system servo-valve hydraulic cylinder variable load |
| url | https://www.mdpi.com/2227-7390/13/3/341 |
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