摘要
负载敏感泵可根据系统负载大小自动调节输出流量和输出压力,具有良好的节能效果。但是负载敏感泵在使用过程中容易产生震荡,有时甚至产生不稳定现象。为了更好地应用负载敏感泵,以负载敏感泵为研究对象,对其工作状态理论进行分析。建立相应的数学模型,求出其控制过程中的开环传递函数,搭建负载敏感泵的AMESim软件仿真模型。通过动态响应分析,得出旁路阻尼孔直径、负载敏感阀弹簧刚度、阀芯直径、旁侧阻尼孔直径等参数对负载敏感泵动态响应的影响。适当改变这些参数,可使系统响应速度加快,从而更快地达到平稳状态。
Load-sensing pump that can automatically adjust the output flow and output pressure according to the system load have good energy-saving effects.However,load-sensing pump are prone to oscillation and sometimes even instability in the process of use.In order to better study and apply the load-sensing pump,a theoretical analysis of the operating state of the load-sensing pump was conducted,and the corresponding mathematical model was established to find out the open-loop transfer function in the control process,and the AMESim software simulation model of the loadsensing pump was built.The effect of parameters such as bypass damping hole diameter,load-sensing valve spring stiffness,spool diameter and bypass damping hole diameter on the dynamic response of the load-sensitive pump is derived from the dynamic response analysis,and appropriate changes of these parameters can make the system respond faster and reach the smooth state more quickly.
作者
胡全义
李宇鹏
岳修凡
HU Quanyi;LI Yupeng;YUE Xiufan(School of Mechanical Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450045,Henan,China)
出处
《流体测量与控制》
2024年第1期1-6,共6页
Fluid Measurement & Control
关键词
负载敏感
节能
系统响应
动态特性
AMESIM仿真
load-sensing
energy saving
system response
dynamic characteristics
AMESim simulation
