Development of Electrohydraulic Proportional Valve Model for Precise Steering Control in Autonomous Tractors
Autonomous tractors are emerging as a pivotal technology in agricultural automation. Precise steering control in these tractors requires high-performance electrohydraulic proportional valves (EHPVs). To optimize EHPV performance and reduce development costs and time, simulation analysis serves as a...
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| Language: | English |
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MDPI AG
2025-02-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/13/2/138 |
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| author | Yi-Seo Min Yong-Joo Kim Seung-Yun Baek Seung-Min Baek Wan-Soo Kim |
| author_facet | Yi-Seo Min Yong-Joo Kim Seung-Yun Baek Seung-Min Baek Wan-Soo Kim |
| author_sort | Yi-Seo Min |
| collection | DOAJ |
| description | Autonomous tractors are emerging as a pivotal technology in agricultural automation. Precise steering control in these tractors requires high-performance electrohydraulic proportional valves (EHPVs). To optimize EHPV performance and reduce development costs and time, simulation analysis serves as a valuable pre-testing tool. This study aimed to develop a simulation model capable of predicting the hydraulic characteristics of EHPVs under real-world operating conditions. The model was created using AMESim, incorporating actual tractor operating conditions and valve control signals. The proposed model was validated through experiments conducted on a tractor equipped with an EHPV, evaluating hydraulic characteristics across various engine speeds and steering angular velocities. The simulation model was utilized to analyze the priority valve control flow characteristics of the automatic steering system and the hydraulic response of the EHPV under step inputs at specific engine speed points. The results indicate that the simulation model demonstrated a mean absolute percentage error (MAPE) ranging from 7.45% to 9.79% for hydraulic power. A <i>t</i>-test analysis of hydraulic power indicated no statistically significant difference between the simulation and experimental values under all test conditions. The proposed EHPV simulation model can be utilized for the optimal future design of EHPV systems. |
| format | Article |
| id | doaj-art-ad1e27c1fff248ec9d0db7d8bbcede8d |
| institution | DOAJ |
| issn | 2075-1702 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj-art-ad1e27c1fff248ec9d0db7d8bbcede8d2025-08-20T02:44:42ZengMDPI AGMachines2075-17022025-02-0113213810.3390/machines13020138Development of Electrohydraulic Proportional Valve Model for Precise Steering Control in Autonomous TractorsYi-Seo Min0Yong-Joo Kim1Seung-Yun Baek2Seung-Min Baek3Wan-Soo Kim4Department of Bio-Industrial Machinery Engineering, Kyungpook National University, Daegu 41566, Republic of KoreaDepartment of Smart Agriculture Systems, Chungnam National University, Daejeon 34134, Republic of KoreaDepartment of Biosystems Machinery Engineering, Chungnam National University, Daejeon 34134, Republic of KoreaDepartment of Biosystems Machinery Engineering, Chungnam National University, Daejeon 34134, Republic of KoreaDepartment of Bio-Industrial Machinery Engineering, Kyungpook National University, Daegu 41566, Republic of KoreaAutonomous tractors are emerging as a pivotal technology in agricultural automation. Precise steering control in these tractors requires high-performance electrohydraulic proportional valves (EHPVs). To optimize EHPV performance and reduce development costs and time, simulation analysis serves as a valuable pre-testing tool. This study aimed to develop a simulation model capable of predicting the hydraulic characteristics of EHPVs under real-world operating conditions. The model was created using AMESim, incorporating actual tractor operating conditions and valve control signals. The proposed model was validated through experiments conducted on a tractor equipped with an EHPV, evaluating hydraulic characteristics across various engine speeds and steering angular velocities. The simulation model was utilized to analyze the priority valve control flow characteristics of the automatic steering system and the hydraulic response of the EHPV under step inputs at specific engine speed points. The results indicate that the simulation model demonstrated a mean absolute percentage error (MAPE) ranging from 7.45% to 9.79% for hydraulic power. A <i>t</i>-test analysis of hydraulic power indicated no statistically significant difference between the simulation and experimental values under all test conditions. The proposed EHPV simulation model can be utilized for the optimal future design of EHPV systems.https://www.mdpi.com/2075-1702/13/2/138agricultural tractorautomatic steeringautonomous tractorelectrohydraulic proportional valvesimulation model |
| spellingShingle | Yi-Seo Min Yong-Joo Kim Seung-Yun Baek Seung-Min Baek Wan-Soo Kim Development of Electrohydraulic Proportional Valve Model for Precise Steering Control in Autonomous Tractors Machines agricultural tractor automatic steering autonomous tractor electrohydraulic proportional valve simulation model |
| title | Development of Electrohydraulic Proportional Valve Model for Precise Steering Control in Autonomous Tractors |
| title_full | Development of Electrohydraulic Proportional Valve Model for Precise Steering Control in Autonomous Tractors |
| title_fullStr | Development of Electrohydraulic Proportional Valve Model for Precise Steering Control in Autonomous Tractors |
| title_full_unstemmed | Development of Electrohydraulic Proportional Valve Model for Precise Steering Control in Autonomous Tractors |
| title_short | Development of Electrohydraulic Proportional Valve Model for Precise Steering Control in Autonomous Tractors |
| title_sort | development of electrohydraulic proportional valve model for precise steering control in autonomous tractors |
| topic | agricultural tractor automatic steering autonomous tractor electrohydraulic proportional valve simulation model |
| url | https://www.mdpi.com/2075-1702/13/2/138 |
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