%0 Journal Article
%T 采用自适应变量泵的高效电静液作动器<br>High Efficiency Electro-hydrostatic Actuator Used the Self-adapt Variable Pump
%A 宋科璞
%A 周蕾
%A 胡务农
%J 机械科学与技术
%D 2016
%X 为解决定量泵设计的电静液作动器(EHA)在大负载时热耗带来的温升问题,提出一种以自适应变量泵为基础的高效电机泵组件,利用杠杆原理,把EHA大负载时电机大扭矩输出,转换成电机小扭矩输出,从而降低电机电流造成的损耗,减小发热。通过建立物理模型,运用理论推导,分析了自适应变量泵、直流无刷电机和高效电机泵组件的特性,得出了EHA输出功率归一化曲线和电机损耗功率归一化曲线,找到了EHA在大负载下提高工作效率,解决发热的方法。<br>The electro-hydrostatic actuator (EHA) using fixed displacement pump cannot avoid the problem that the motor's temperature rises fast when EHA under large load. In this article, a high-efficiency motor-pump is proposed, which uses a self-adapt variable pump. Self-adapt variable pump reduces the output torque of the motor based on the principle of lever. Then the motor's energy loss caused by the current is lowed and motor's heat becomes less. This article also analyzes the characteristic of self-adapt variable pump, brushless DC motor and high-efficiency motor-pump. Then the normalized plots of the EHA's output power and motor's loss power are gotten, which give a way to improve EHA's performance and reduce the heat under large load
%K 电静液作动器
%K 高效电机泵组件
%K 自适应变量泵&lt
%K br&gt
%K electro-hydrostatic actuator(EHA)
%K high-efficiency motor-pump
%K self-adapt variable pump
%U http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6310.shtml