基于AMESim的承重实验台同步加载系统液压调平设计与实验研究

Hydraulic leveling design and experimental research of an AMESim-based synchronous loading system for bearing test bed

以承重实验台同步加载系统为研究对象,设计了一套液压调平系统油路,得到了油缸缸径、液压系统流量等参数的理论解。利用AMESim软件对实验台液压调平系统的复杂工况进行了动力学仿真,结果表明:在2s^11s内,液压系统的波动现象逐渐减弱;在12s^30s内系统已完全调平,实验台工作平稳,无振荡现象。液压调平实验过程中速度和位移的实验数据与仿真计算间的误差范围分别为1.2~3.5和0.01~0.47,仿真计算结果能够较准确地描述液压系统的调平过程,表明本文设计的液压调平系统油路方案具有较好的科学性和可行性,且满足实际工况的要求。

In the present work, a set of hydraulic oil system is designed on the basis of synchronous loading system of bearing test bed, and its corresponding theoretical solution of the diameter for hydraulic cylinder, the flow for hydraulic system and other parameters are obtained. AMESim is used to simulate various complex working conditions for the hydraulic leveling system of the test bed which applies the above oil method. The simulation results show that the fluctuation phenomenon of hydraulic system is gradually weakened in 2 s^11 s. After 11 s, the test bed works smoothly without oscillation because the system has been completely leveled. Meanwhile, the hydraulic leveling experiment is implemented, the corresponding results show that the error ranges between the experimental data and calculated curve for both the velocity and the displacement in the process of leveling experiment are 1.2~3.5 and 0.01~0.47, respectively. Thus, the simulation results can accurately describe the leveling process of the hydraulic system, the oil design scheme of the hydraulic leveling system is greatly rational and reliable, and also meets the requirements of the actual working conditions.