机电静压伺服作动器热分析及热控制  

Thermal Analysis and Thermal Control of Electro-hydrostatic Actuator

作　　者：幺志刚[1] 卢红英[1] 史正强[1] 裴忠才[2] 

机构地区：[1]北京精密机电控制设备研究所,北京100076 [2]北京航空航天大学自动化科学与电气工程学院,北京100191

出　　处：《液压与气动》2016年第10期6-11,共6页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(50975010)

摘　　要：机电静压伺服作动器是一种闭式液压系统,由于取消了回油油箱,导致系统散热能力较差。油液的温度过高,易造成密封件的过快老化,从而影响系统的寿命。针对这个问题,用热力学容积体方法和热仿真软件相结合对外加散热片的方式进行了热分析,外加散热片无法满足系统对油液温度的要求。提出在系统中增加冲洗回路来控制油液温度,并进行了热建模仿真,仿真结果显示,增加冲洗回路的方法,可以将油液温度控制在合理范围。Electro-hydrostatic actuator is a kind of closed hydraulic system. Due to cancellation of the oil tank, this system has poor heat capacity. High oil temperature causes the sealing parts of the system too fast aging. In view of this problem, the thermal analysis was carried out by using the thermodynamic volume method and the thermal simulation software. The external heat sink cannot meet requirements of the oil temperature of the system. Add flushing circuit to the system to control the oil temperature, thermal modeling and simulation is done. Simulation results show that oil temperature can be controlled in a reasonable range using this method.

关 键 词：机电静压伺服作动器 容积体方法 热建模仿真 冲洗回路 

分 类 号：TH137[机械工程—机械制造及自动化] TP13[自动化与计算机技术—控制理论与控制工程]