Assessment of Health Monitoring Trustworthiness of Avionics Systems

International Journal of Prognostics and Health Management

Vladimir Ulansky¹  Iryna Terentyeva²  Igor Machalin² 

[1] Department of Electronics, Robotics, Monitoring and IoT Technologies, National Aviation University, Kyiv, 03058, Ukraine;Department of Telecommunication and Radio Electronic Systems, National Aviation University, Kyiv, 03058, Ukraine;

关键词: health monitoring;    false-positive;    false-negative;    vor receiver;   

DOI  :  https://doi.org/10.36001/ijphm.2021.v12i2.2907

来源: DOAJ

【 摘 要 】

The article provides a methodology for assessing the trustworthiness of health monitoring the dismounted avionics systems with automated test equipment (ATE). The indicators include the probabilities of false-positive, false-negative, true-positive, and true-negative. For the first time, we introduced into consideration the instability of the source of stimulus signal (SSS), the random and systematic component of the measuring channel error, and the reliability characteristics of the systems themselves. We consider a specific case of an exponential distribution of permanent failures and intermittent faults and derive formulas for calculating the trustworthiness indicators. Numerical calculations illustrate how the probabilities of correct and incorrect decisions depend on accuracy parameters. We show that the probabilities of false-positive and false-negative increase much faster than the probabilities of true-positive and true-negative decrease when the standard deviation of stimulus signal increases. For a Very High-Frequency Omni-Directional Range (VOR) receiver, we demonstrate that even with a zero random error generated by the source of the stimulus signal, the probabilities of false-positive and false-negative are different from zero.

【 授权许可】

Unknown