基于集总参数法的EHA柱塞泵热特性分析
Thermal Characteristics Analysis of EHA Piston Pump Based on the Lumped Parameter Method
苏颖杰 1李硕 1夏立群 1朱明君1
作者信息
- 1. 航空工业西安飞行自动控制研究所,陕西 西安 710065
- 折叠
摘要
针对EHA(电静液作动器)工况多样、发热严重、散热环境复杂进而难以进行系统温度特性管理的问题,提出了对于其主要元件柱塞泵的热网络模型.分析了EHA柱塞泵的结构和工作原理,根据其组件特性设立网络节点,利用集总参数法建立热平衡方程.使用MATLAB在多种工况下对模型进行求解,能够得到各个组件的温度曲线,验证了模型的可行性.结果表明:热网络模型能够完成EHA柱塞泵的热分析,可以较为准确和快速地对系统温度进行预测,并在系统的设计初期针对热特性设计提供依据.
Abstract
A thermal network model of the piston pump,the main component of the EHA(Electro Hydrostatic Actuator),is proposed to address the problems of diverse working conditions,serious heat generation,complex heat dissipation environment and thus difficult to manage the system temperature characteristics.The structure and working principle of the EHA piston pump are analyzed,the network nodes are set up according to its component characteristics,and the heat balance equations are established using the lumped parameter method.Using MATLAB to solve the model under various working conditions can obtain the temperature curves of each component,and the feasibility of the model is verified.The results show that the thermal network model can complete the thermal analysis of EHA piston pump.It can predict the system temperature accurately and quickly,and provide a basis for the design of thermal characteristics at the early stage of system design.
关键词
EHA(电静液作动器)/柱塞泵/集总参数法/热分析Key words
EHA(Electro Hydrostatic Actuator)/piston pump/lumped parameter method/thermal analysis引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据