Authors

Abstract

Hydraulic drives are widely used in tuber crop machinery for travelling and working-unit operations to cope with complex field conditions. However, under low-speed high-torque operation, fluctuating loads, and multi-actuator working conditions, hydraulic systems often suffer from reduced energy efficiency and insufficient stability. This paper reviews typical applications of hydraulic technology in travelling and working-unit drive systems of tuber crop machinery, and analyzes key issues including energy efficiency under low-speed high-torque conditions, dynamic responses to load fluctuations, system coupling induced by multi-actuator operation, and stability constraints related to crop damage sensitivity. Recent advances in system optimization and control strategies are summarized.

Abstract in Chinese

薯类作物机械在挖掘、输送、分离及行走等作业环节中广泛采用液压驱动，以适应复杂多变的田间工况。然而，在低速大扭矩作业、负载强波动及多执行机构并行运行条件下，液压系统易出现能效下降、压力与流量波动加剧及驱动稳定性不足等问题。围绕薯类作物机械的作业过程与动力需求特征，本文系统综述了液压技术在行走驱动系统与作业部件驱动系统中的典型应用，重点分析了低速大扭矩工况下的能效特征、负载波动引发的动态响应、多执行机构并行运行的系统耦合效应以及作物损伤敏感性对驱动稳定性的约束作用。在此基础上，总结了液压驱动系统在结构优化、功率匹配、负载敏感与电液控制、多执行机构协同控制及信息融合辅助控制等方面的研究进展，旨在为薯类作物机械液压系统的优化设计与控制策略研究提供参考。