Evaluation of Health Condition for IMA Module Based on Mahalanobis Distance

In this paper, the degenerate state data of the Complex Programmable Logic Device (CPLD) functional circuit module of Integrated Modular Avionics (IMA) system is obtained by the method of fault injection. By extracting the characteristics of the time-domain data of the degraded state and using the minimum redundancy maximum relevance (mRMR) method, the related sensitive degradation characteristics are obtained. Then the health assessment of CPLD functional modules is carried out by the single parameter as well as the multi parameter evaluation method based on the calculation of confidence value and Mahalanobis distance. The results of this paper provide a practical and engineering approach to the health evaluation of the IMA system at module level based on health management technology of the IMA system.