比例溢流阀闭环模拟加载仿真与实验研究  

Simulation and Experimental Study on Loading Closed Loop About Proportional Relief Valve

作　　者：刘永[1,2] 谷立臣[2,3] 杨彬[2] 王生怀[1] 

机构地区：[1]湖北汽车工业学院机械工程学院,湖北十堰442002 [2]长安大学工程机械学院,陕西西安710064 [3]西安建筑科技大学机电工程学院,陕西西安710054

出　　处：《机械设计与制造》2016年第9期259-261,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51275375);湖北省自然科学基金资助项目(2013CFB045);湖北省教育厅科学技术研究重点资助项目(D20141802);湖北汽车工业学院博士科研基金资助项目(BK201403)

摘　　要：液压实验台中常用比例溢流阀作为模拟加载元件,背压模拟负载工况。针对开环加载存在稳态误差,易受流量干扰输入影响的特点,设计了压力闭环PID控制加载系统。通过将压力传感器测量的压力值与设定的目标压力值作比较,将两者差值输入PID控制器,使PID控制器输出适时改变,从而调整加载电压,改变励磁电流大小,调节比例溢流阀开口面积大小,使系统实际压力达到目标设定值。AMESim软件仿真与实验结果表明:压力闭环控制抗干扰能力强,可以消除稳态误差。Proportional relief valve is usually used in the hydraulic experimental platform for simulating the load working conditions. Because of exiting steady-state error and control accuracy easily being affected by the flow disturbance on the open-loop loading, the pressure closed-loop PID control system is designed in this paper. Comparing the pressure value of the pressure sensor with the set of the target pressure value, the PID controller can be adjusted according to the load voltage. The excitation current is changed, and the size of the opening area of the proportional relief valve is adjusted. The actual pressure of the system can reach the target setting value. AMESim software simulation and experimental results show that： The steadystate error can be eliminated with pressure close loop control and the anti disturbance ability of system is strong.

关 键 词：比例溢流阀 压力闭环 AMESIM 模拟加载 

分 类 号：TH16[机械工程—机械制造及自动化] TH137