Research On Performance Index Design And Evaluation Method For Upgraded Modified Avionics System

In the process of rapid development of civil aviation,more and more aircraft will enter the upgrading stage.The modification of the civil aircraft avionics system can improve the flight performance of the aircraft and provide higher guarantee for flight safety.At present,there are few studies on the evaluation of the retrofitting performance of avionics systems.Therefore,it is very urgent to study its performance evaluation.This paper is devoted to the research on the design and evaluation methods of the performance evaluation of avionics system upgrade and modification,and finally forms a complete performance evaluation process.Firstly,the performance evaluation index model of the avionics system upgrade and modification performance is established and a specific performance evaluation index system is established.The weight of each layer is calculated for the established performance evaluation index system,and the interval judgment matrix(IAHP)is used to construct the interval judgment matrix for calculation.Secondly,a fuzzy comprehensive evaluation model is established,and the membership function is set for the underlying indicators and the membership degree is calculated.On the basis of obtaining the subordinate index membership degree,combined with the weight value corresponding to each layer of the indicator system,the comprehensive evaluation of the performance of the avionics system modification is realized,and it is applied to the example evaluation.Finally,a performance evaluation platform for avionics system retrofitting is designed and implemented.In this paper,a set of evaluation index system for the retrofitting performance of avionics system is established,and a method for evaluating the retrofitting performance of avionics system is studied.In the evaluation example,it is shown that the objective performance level can be compared.The upgraded modified avionics system performance evaluation system can efficiently and accurately perform performance evaluation and improve the efficiency of performance evaluation.