• 论文 •

### GO-FLOW法在飞机EHA可靠性分析中的应用

1. 大连理工大学 机械工程学院, 大连 116023
• 收稿日期:2016-05-24 出版日期:2017-06-20 发布日期:2016-08-01
• 通讯作者: 段富海,E-mail:duanfh@dlut.edu.cn E-mail:duanfh@dlut.edu.cn
• 作者简介:兰雪 女,硕士研究生。主要研究方向:系统可靠性分析与评估;段富海 男,博士,教授,博士生导师。主要研究方向:系统可靠性分析与评估;桑勇 男,博士,副教授,硕士生导师。主要研究方向:机电液一体化系统。
• 基金资助:
航空科学基金（20150863003）

### Application of GO-FLOW methodology in reliability analysis of aircraft EHA

LAN Xue, DUAN Fuhai, SANG Yong

1. School of Mechanical Engineering, Dalian University of Technology, Dalian 116023, China
• Received:2016-05-24 Online:2017-06-20 Published:2016-08-01
• Supported by:
Aeronautical Science Foundation of China (20150863003)

Abstract: The GO-FLOW methodology is applied in the reliability analysis of aircraft electro-hydrostatic actuator (EHA). Firstly, based on the reasonable division of unit function, GO-FLOW reliability analysis model of EHA was established. In order to solve the difficult problem that GO-FLOW chart cannot contain feedback loops, Boolean algebra was used to solve the Boolean equations that describe the feedback loops. Secondly, the GO-FLOW calculation was finished and the system reliability at each time point was obtained. Thirdly, compared with the results of GO methodology, the feasibility and accuracy of GO-FLOW methodology were clearly verified. Finally, the system reliability changing rule with time was obtained through the MATLAB curve fitting so that the system can be repaired and maintained timely. The results show that the GO-FLOW methodology can easily obtain the system reliability at each time point with only one operation and has more advantages than GO methodology in reducing computational complexity.