基于AMESim的静液压传动装置的特性分析

静液压传动装置广泛用于各种农业机械的行走系统中,是由液压泵和液压马达组成的闭式液压传动装置。通过对该传动装置液压系统进行数学建模,找出影响系统响应速度的因素,在AMESim环境下对其不同参数的不同取值进行仿真,分析几种参数对静液压传动系统响应速度的影响,目的是为静液压传动装置的研究及应用提供依据。

基于AMESim的海水淡化斜盘柱塞式能量回收装置运行性能分析

为满足中小型海水淡化系统节能降耗需求,设计开发了一种新型斜盘柱塞式能量回收装置,并基于AMESim仿真分析软件构建了斜盘柱塞式能量回收装置的液压仿真模型及与之配套的反渗透海水淡化系统流体计算模型,对斜盘柱塞式能量回收装置在海水淡化系统中的耦合运行性能进行了模拟研究。结果表明:在装置高压进流压力为6.0 MPa,设计处理量为18 m^(3)·h^(-1)及斜盘转速735 r·min^(-1)条件下,装置中增、泄压流体均表现出较好的流动稳定性,增、泄压流体的流量脉动率最大为1.48%,压力脉动率最大为2.71%。在10~25 m^(3)·h^(-1)范围内,随处理量增加,流量及压力的最大脉动率只比设计处理量时增加了0.1%左右,说明装置具有良好的容量灵活性,且综合能量回收效率始终保持在97%以上。斜盘柱塞式能量回收装置良好的流量操作弹性和较高的能量回收效率,为中小型海水淡化系统的高效可靠运行提供了一种新的选择。

Design and dynamic simulation of hydraulic system of a new automatic transmission

A new hydraulic system of a novel automatic transmission (AT) was designed. The dimension and structure of valves and cylinders were designed by theoretical calculation. The dynamic simulation model of hydraulic system of AT was established by ITI-SimulationX. Simulation results and theoretical design results were compared to confirm the simulation model. Based on the confirmed simulation model, the simulation results of pressure and flow of the hydraulic system were analyzed. The dynamic simulation method is very helpful for designing and analyzing the performance of hydraulic system and further optimization design. The theoretical design method and dynamic simulation model are feasible for the real industrial applications. The research results can be used in hydraulic system design and optimization.