基于AMESim的PQ泵特性研究  

Research on the characteristic of PQ pump based on AMESim

作　　者：郑昌马 吴坚锋 马冲[2] 孔晓武[2] 

机构地区：[1]仙居永灵液压机械有限公司,浙江仙居317300 [2]浙江大学流体传动与控制国家重点实验室,浙江杭州310027

出　　处：《机电工程》2010年第1期59-61,共3页Journal of Mechanical & Electrical Engineering

基　　金：浙江省重大科技专项资助项目(2007C11171)

摘　　要：针对PQ泵动态特性中存在流量阶跃慢、超调量大等问题,在分析了YL-56型PQ泵工作原理的基础上,建立了基于AMESim仿真软件的PQ泵仿真模型,通过试验验证了仿真模型的正确性并研究了PQ泵的静态与动态特性,以及调节阀弹簧刚度、变量弹簧刚度对流量阶跃特性的影响。研究结果表明:增加变量弹簧刚度能减小流量上升时间,加快响应速度,但会增加泵的内泄漏量;增加调节阀弹簧能够有效降低流量阶跃的超调量,减少振荡次数,但会增加泵输出流量的稳态误差。Aiming at the speed and overshoot of flow step response,working principle of PQ pump was analyzed,and simulation model of PQ pump was developed using AMESim.The steady and dynamic characteristic in simulation was compared with that in experiment,and the simulation model was proved right.Through the study of the spring rigidity,the results indicate that increasing the displacement-varying spring rigidity can cut risetime of flow,but cause more internal leakage;increasing the spring rigidity of control valve can decrease overshoot of flow step response and the number of vibration,but cause more steady-state error.

关 键 词：PQ泵 仿真 电液比例 动态特性 

分 类 号：TH137.5[机械工程—机械制造及自动化]