摘要
电液执行器因其诸多性能优势而被广泛应用于车辆发动机等的自动控制调节系统中。本文针对由高速开关阀和柱塞式液压缸等组成的典型电液执行器系统展开理论研究,建立其数学模型,并按照实际工况参数进行仿真研究;通过分析仿真结果,得到了高速开关阀的阀芯直径、柱塞缸的活塞面积、液压油弹性模量等系统参数对系统响应灵敏性的影响关系;并基于此,提出一种"高速开关阀串联二级阀流量放大"的电液执行器设计方案,该方案在理论上能够显著提高电液执行器的响应灵敏性。
Electric-hydraulic actuators, with plenty of good performances, are widely used in automatic control system for vehicle engine. A typical electric-hydraulic actuator composed of fast switching valves and plunger-type hydraulic cylinders was researched, its mathematical model was developed, and the digital simulation of the system was carried out according to parameters under its practical working conditions. Through analyzing the result of simulation, the influence of the system parameters, suchas the spool aperture of fast switching valve, the plunger area of the plunger-type hydraulic cylinders, and so on upon the response rapidity of the system was achieved. A project to improve the response rapidity of the actuator was brought forward, which establish the basic instruction on the design and aoolication of electric-hydraulic actuator systems in some fields.
出处
《机床与液压》
北大核心
2008年第5期80-82,136,共4页
Machine Tool & Hydraulics
关键词
电液执行器
高速开关阀
灵敏性
仿真
Electro-hydraulic actuator
Fast switching valve
Response rapidity
Simulation
