由于转弯半径小,操纵轻便等优点,用液压动力转向的铰接式车辆在矿山机械、工程机械等方面获得了广泛的应用。本文对恒流式随动滑阀控制的铰接式车辆液压转向系统进行动态分析。在推导恒流式正开口四边滑阀静特性的基础上,导出系统的传递函数,并对系统的稳定性进行研究,讨论系统的各参数对系统稳定性的影响。 Due to the small turning radius, light operation and other advantages, articulated vehicles with hydraulic power steering have been widely used in mining machinery, construction machinery and so on. In this paper, the dynamic analysis of the articulated vehicle hydraulic steering system controlled by the constant flow spool valve is carried out. Based on the derivation of the static characteristics of a constant-flow positive open spool, the transfer function of the system is derived and the stability of the system is studied. The influence of various parameters of the system on the stability of the system is discussed.