中文摘要：

推导出考虑液压缸泄漏的节流调速回路活塞运动速度表达式,基于AMESim建立了进油路的节流调速回路仿真模型,分析液压缸泄漏对节流调速回路速度-负载特性的影响,得到速度-负载曲线;利用QCS003C教学实验台进行实验验证,得出所建立的模型是准确的结论,为节流调速回路的进一步研究提供了理论依据。

英文摘要：

The movement speed expression of throttle velocity modulation circuit in which the hydraulic cylinder leaking was con-sidered was built. The simulation model of the throttle velocity modulation circuit was built using AMESim software. The influence of the leaks of hydraulic cylinder to the speed-load characteristic was analyzed and the speed-load curve was obtained. An experimental verifi-cation was made on a multifunctional hydraulic experimental platform. It is concluded that the established model is accurate. It provides theory basis for further research.