基于AMEsim/Simulink的转向架分离装置液压系统的建模及联合仿真分析  

Modeling and Simulation for Hydraulic System of Separation Device Based on AMEsim/Simulink

作　　者：徐步算[1] 任光胜[1] 尹小庆[1] 

机构地区：[1]重庆大学机械工程学院,重庆400040

出　　处：《世界科技研究与发展》2013年第4期443-446,494,共5页World Sci-Tech R&D

基　　金：国家科技支撑计划十一五重点项目(2007BAG06B05)资助

摘　　要：为了提高轻轨转向架分离装置平台的两个升降液压缸的同步精度,提出采用单个零位负重叠比例阀来同时控制两油缸同步的方法,并对该液压系统进行了AMEsim数学建模和频率特性分析,发现开环增益K_v为4时幅值裕度和相位裕度比较宽裕,且系统频宽达到1.34dB。由AMEsim/Simulink的联合仿真的结果可知,双缸在偏载情况下正、返行程位移同步效果良好。因此,采用单个零位负重叠比例阀双缸液压同步系统能有效满足转向架分离装置升降平台快速性、稳定性、准确性等方面的要求,降低了成本,并且在实际中得到了很好的应用。In order to increase the synchronous accuracy of the two lifting hydraulic cylinders on the bogie separation device platform of the light rail, a way of controlling the synchronization of the two cylinders is proposed, using a single proportional valve with negative overlap in its zero position. Through the AMEsim mathematical modeling and frequency analysis of the hydraulic system, the result shows that when the open loop gain Kv is 4 ,the magnitude margin and the phase margin are comparatively large and the system bandwidth reaches 1.34 dB. From the results of the co-simulation of AMEsim/Simulink, the synchronous effect is well when the two cylinders are in the positive and negative displacement with eccentric load. Therefore,a single proportional valve synchronous hydraulic system can satisfy the requirements of speedi- ness, stability and accuracy of the bogie separation device platform. Besides, cost is reduced, indicating a wide application in real situations.

关 键 词：转向架分离装置 比例控制 AMESIM 仿真建模 

分 类 号：U279.32[机械工程—车辆工程]