北京航空航天大学学报 ›› 2017, Vol. 43 ›› Issue (6): 1264-1270.doi: 10.13700/j.bh.1001-5965.2016.0444

• 论文 • 上一篇    下一篇

GO-FLOW法在飞机EHA可靠性分析中的应用

兰雪, 段富海, 桑勇   

  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)

摘要: 应用GO-FLOW法分析了飞机电静液作动器(EHA)的可靠性。首先在EHA单元功能合理划分的基础上,建立了EHA的GO-FLOW可靠性分析模型,采用布尔代数求解描述反馈环的布尔方程,解决了GO-FLOW图不允许存在循环的难题;其次进行了GO-FLOW运算,得到EHA系统在各时间点的可靠度;再次与GO法的结果比较,验证了GO-FLOW法的可行性和准确性;最后通过MATLAB曲线拟合,得到系统可靠度随时间的变化规律,以便及时对系统进行检修和维护。结果表明GO-FLOW法只需一次运算,就可得到系统在各时间点的可靠度,在减小计算复杂度方面较GO法有优势。

关键词: 电静液作动器(EHA), GO-FLOW法, GO法, 布尔代数, 可靠性分析

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.

Key words: electro-hydraulic actuator (EHA), GO-FLOW methodology, GO methodology, Boolean algebra, reliability analysis

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发