A Vibration Reduction Control Method for Tractor Rear Hydraulic Hitch Based on Pressure Feedback

Changqing Liu, Jinheng Gu, Xin Du (), Le Yang, Yuefeng Du and Enrong Mao
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Changqing Liu: College of Mechanical Engineering, Jiangsu Ocean University, No. 59 Cangwu Road, Haizhou District, Lianyungang 222005, China
Jinheng Gu: School of Mechatronic Engineering, China University of Mining and Technology, No. 1 Daxue Road, Xuzhou 221116, China
Xin Du: College of Mechanical Engineering, Jiangsu Ocean University, No. 59 Cangwu Road, Haizhou District, Lianyungang 222005, China
Le Yang: College of Mechanical Engineering, Jiangsu Ocean University, No. 59 Cangwu Road, Haizhou District, Lianyungang 222005, China
Yuefeng Du: Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, College of Engineering, China Agricultural University, No. 17 Tsinghua East Road, Haidian District, Beijing 100091, China
Enrong Mao: Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, College of Engineering, China Agricultural University, No. 17 Tsinghua East Road, Haidian District, Beijing 100091, China

Agriculture, 2023, vol. 13, issue 8, 1-16

Abstract: Tractors transporting heavy hitches tend to tilt severely, resulting in significant dynamic loads on the front axle and affecting handling stability. Tractors and rear hitches can be considered vibration systems with two coupled masses. Thus, active damping control strategies between tractors and rear hitches are proposed in this study. The complexity and versatility of tractor hydraulic hitching during tractor transit transport are considered. A method of improving the tractor hydraulic hitch damping ratio with pressure feedback is proposed. The dynamic characteristics of the pressure feedback hydraulic hitch system are analyzed. A dynamic model of the tractor transfer transport unit is established, and a numerical simulation is carried out to verify the effectiveness of the proposed hydraulic hitch vibration reduction control strategy based on pressure feedback. A real test platform for tractor vibration reduction control is built. The test results show that the pressure feedback vibration reduction control method proposed in this paper affects tractor pitching motion suppression. In addition, the proposed control strategy does not require a force pin sensor. Tractor hydraulic hitch damping control costs are reduced. The vibration reduction control strategy proposed in this study has high reliability and can be used as a reference for non-road-vehicle vibration reduction control.

Keywords: agricultural tractor; electronic hydraulic hitch; damping control; pressure feedback; pitching motion (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
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