Analysis of the dynamic performance of an electro-hydrostatic actuator and improvement methods

Analysis of the dynamic performance of an electro-hydrostatic actuator and improvement methods

Zhihui LI;Yaoxing SHANG;Zongxia JIAO;Yan LIN;Shuai WU;Xiaobin LI

【期刊名称】《中国航空学报（英文版）》 【年(卷),期】2018(031)012

【摘要】As a kind of actuation mechanism for power-by-wire (PBW) actuation systems of more/all electrical aircraft, an electro-hydrostatic actuator (EHA) is a highly integrated local hydraulic actuation system. It is a volume control system consisting of a motor, a pump, an actuator, etc., which has features of high efficiency and reliability. However, the poor dynamic characteristic is one of the main factors restricting its wide application in aircraft. In this paper, the reason for the poor dynamic characteristic of an EHA is revealed from the perspectives of the natural fre-quency characteristic and the power requirement, respectively. In other words, the insufficiency of the motor output power at a high frequency is the main factor causing the poor dynamic char-acteristic of the system, and methods which include increasing the maximum output torque of the motor, reducing the rotational inertia of the motor-pump group, and adopting a double-motor-pump group configuration are proposed in this paper, by which the dynamic characteristic of the system can be improved. The feasibility of those methods are verified by simulations. Finally, the dynamic characteristic

is tested on an EHA prototype, and results show that saturation of the out-put torque of the motor is the main factor restricting the dynamic characteristic of the EHA system. 【总页数】9页(2312-2320) 【关键词】

【作者】Zhihui LI;Yaoxing SHANG;Zongxia JIAO;Yan LIN;Shuai WU;Xiaobin LI

【作者单位】School of Automation Science and Electrical Engineering, Beihang University, Beijing 100083, China;Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing 100083, China;;;; 【正文语种】英文 【中图分类】 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_chinese-journal-aeronautics_thesis/0201271232529.html 【相关文献】

1.Performance Analysis and Improvement of Flat Torque Converters Using DOE Method [J], Guang-Qiang Wu; Jie Chen; Wen-Jie Zhu 2.Dynamic Performance Analysis of the Coupling Shaft System in a Carpet Tufting Machine Utilizing the Transfer Matrix Method [J], XU Yang; SUN Zhi-jun; HUANG Shuang; SHENG Xiao-wei

3.Dynamic Simulation and Performance Investigation of No-Frost

Refrigerator: Part Ⅱ System Simulation and Performance Analysis [J], SU Xiu-ping; CHEN Jiang-ping; CHEN Zhi-jiu; ZHOU Xiao-tian

4.Comparison of performance between rescaled range analysis and rescaled variance analysis in detecting abrupt dynamic change [J], 何文平; 刘群群; 姜允迪; 卢莹

5.DYNAMIC CHARACTERISTIC ANALYSIS OF FUZZY- STOCHASTIC TRUSS STRUCTURES BASED ON FUZZY FACTOR METHOD AND RANDOM FACTOR METHOD [J], MA Juan ; CHEN Jian-jun; XU Ya-lan; JIANG Tao

以上内容为文献基本信息，获取文献全文请下载