摘要
关于液压系统的谐振现象,传统流体理论介绍的不多,仅仅提出当机械系统的固有频率和液压系统的工作频率相接近时会发生谐振现象。针对单轴高频电液振动台出现的谐振现象,运用能量守恒原理对其产生的谐振现象进行了理论分析,并在2D激振阀不同惯性负载以及不同轴向开口作用下,对单轴高频电液振动台输出的谐振波形进行了仿真研究。并利用数字伺服阀调节液压缸无杆腔的容积,实现液压系统固有频率的改变,从而使得电液振动台能够正常工作在不同的谐振频率点。
On the resonance phenomenon of hydraulic system, the introduction of the traditional fluid theory is not much. It is proposed that the resonance phenomenon occurs when the natural frequency of the mechanical system and the working frequency of the hydraulic system were closed. Analyzed the resonance phenomenon of high-frequency single-axis electro-hydraulic shaking table by energy conservation principle in this paper. Under the different inertial loads and axial openings of 2D valve, the vibration wave of high-frequency single-axis electro-hydraulic shaking table was studied by simulation. And use of digital servo valve to adjust the without rod chamber volume of hydraulic cylinder, then the natural frequency of the hydraulic system will be changed. Finally, make sure the electro-hydraulic shaking table can work at different resonance frequencies.
出处
《液压气动与密封》
2016年第4期20-23,共4页
Hydraulics Pneumatics & Seals
基金
浙江省自然科学基金资助项目(LY14E050007)
浙江省重点科技创新团队(2011R50011)
关键词
电液振动台
谐振现象
能量守恒
高频
2D激振阀
electro-hydraulic shaking table
resonance phenomenon
energy-conservation
high-frequency
2D valve
