Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (4): 1144-1152.doi: 10.12305/j.issn.1001-506X.2021.04.33

• Reliability • Previous Articles     Next Articles

Performance degradation Lévy model of integrated modular avionics

Zehai GAO1,*(), Cunbao MA2(), Haotian NIU2()   

  1. 1. Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an 710048, China
    2. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2020-05-06 Online:2021-03-25 Published:2021-03-31
  • Contact: Zehai GAO E-mail:gaozehai@xaut.edu.cn;caecmacb@nwpu.edu.cn;niuht@mail.nwpu.edu.cn

Abstract:

Integrated modular avionics (IMA) is one of the core system in modern airplane, and its performance has a marked impact on the flight safety. This paper focuses on the degradation characteristics of IMA. The IMA operation management mechanism is analyzed firstly. The intermittent fault and the function completion time are selected as IMA health characteristic parameters based on the existed sensors. Secondly, this paper proves that the completion time of avionics functions conforms to Lévy process based on IMA operation management mechanism. An IMA performance degradation Lévy model is proposed. The IMA performance degradation Lévy models under the influence of the single factor and multiple factors are established, respectively. Finally, a hardware simulation platform is built to figure out the parameters of the IMA performance degradation Lévy model. The performance degradation process of IMA is simulated, and the effectiveness of the proposed model is validated.

Key words: integrated modular avionics (IMA), intermittent fault, performance degradation, Lévy model

CLC Number: 

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