required load pressure

This paper presents a new concept of asymmetrical valve controlled asymmetrical cylinder,makes new definition of load flow and load pressure,thus illustrated static and dynamic properties of asymmetrical cylinders,derives its transfer function and block diagram,which can be universally applied to all kinds valve controlled cylinder and may be a meaningful guide to the design of such servo systems.

提出了非对称阀控制非对称缸的概念 ,并对传统的负载流量和负载压力重新进行了定义 ,依此对非对称阀控制非对称缸的静态特性和动态特性进行了分析 ,推导了其传递函数及方框图 ,其推导过程对此类伺服系统的设计具有积极的指导意

According to the working characteristics of the pump and valve combined EHA (Electrical Hydraulic Actuator), the method to improve the system efficiency by increasing the design value of load pressure was proposed.

分析了导致飞行器液压作动系统温度升高的主要因素以及采用多级供油压力提高效率的可行性,针对泵阀联合EHA(电动静液作动器)的工作特点,提出了提高负载压力设计值提高效率的方法,在负载相同的条件下,对伺服阀和定量泵的输出流量、损耗流量变化、作动系统整体效率变化进行了分析。