液压与气动2025，Vol.49Issue(6)：27-33,7.DOI:10.11832/j.issn.1000-4858.2025.06.004
基于数字阀的拖拉机电液悬挂主动减振特性分析
Analysis on Active Vibration Reduction Characteristics of Electro-hydraulic Suspension for Tractors Based on Digital Hydraulic Valves
摘要
Abstract
Aiming at the challenges of poor road conditions,complex environments,this study proposes an active vibration reduction scheme using a tractor electro-hydraulic suspension based on digital valves in order to improve stability and comfort during tractor transportation.Highly responsive digital hydraulic valves are used to adjust the speed and displacement of the implement hitch cylinder in real time to counteract vibration.Firstly,a dynamics model of tractor vibration system with suspended implements is derived.A sliding mode controller is designed,and a simulation model is developed to investigate the active vibration reduction performance under random road,sinusoidal road,and pulse road conditions.The results demonstrate that effective vibration suppression is achieved under all three road conditions.Specifically,under a 20 km/h random road excitation,the peak vertical acceleration of the tractor can be reduced by the active vibration reduction system of electro-hydraulic suspension from 2.13 m/s2 to 1.01 m/s2,and the root mean square value decreases from 0.84 m/s2 to 0.28 m/s2,achieving a 63％reduction compared to passive vibration reduction systems,which results in excellent vibration reduction.关键词
液压系统/拖拉机/主动减振/电液悬挂/滑模控制Key words
hydraulic system/tractor/active vibration reduction/electro-hydraulic suspension/sliding mode control分类
机械工程引用本文复制引用
徐成都,武瀚文,郝云晓,权龙,赵星宇..基于数字阀的拖拉机电液悬挂主动减振特性分析[J].液压与气动,2025,49(6):27-33,7.基金项目
国家重点研发计划(2022YFB3403005) （2022YFB3403005）
