Advanced Materials Science Research

Avionics Peer Review Journals

 avionics refers to all the electronics-based instrumentation that enables essential capabilities such as communication, navigation, flight control (FC), data handling (DH), and vehicle management for the MSA ; therefore, as the avionics’ health condition and effectiveness directly influence manned space flight safety and mission success, an accurate assessment of both the avionics’ health condition and the subsystem’s effectiveness is of great importance. To avoid and manage system failures, an ISHM-oriented hierarchical effectiveness MSA evaluation is required. In recent years, there has been significant research focused on MSA health management. Wilkinson in a discussion on prognostics for avionics remaining useful life, commented that there were two options to be considered when mechanizing the estimation of remaining life; an on-board function such as a CMC or the environmental history that could be downloaded to a ground-based maintenance facility for offline computation of remaining life. In the following year, Orsagh studied PHM technologies for avionics power supplies and Banerjee  proposed a method based on discriminant analysis for the prognostics of an avionics system. However, little research has paid attention to evaluating effectiveness at the subsystem level from an ISHM perspective. Similarly, although some studies have made progress in evaluating the effectiveness of MSA subsystems, little importance has been attached to the overall health condition. In this study, as the test targets are selected from the MSA system-level health condition assessment, the MSA health condition is first assessed at the system level before an effectiveness evaluation is conducted at the subsystem level. To do this, a holistic approach is required for a system effectiveness and condition assessment that concurrently considers all multidimensional criteria and takes fuzziness and uncertainty into account.  

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