Abstract:

Aiming at the problem of contact resistance prediction and prediction accuracy of missile relays,a new gray model based on the firefly algorithm (FA) optimized and improved gray model is proposed.On the basis of the traditional gray GM(1,1) model,the model is dynamically updated using the equal-dimensional gray number recursive method to establish an improved gray model RGM(1,1),and the firefly algorithm is introduced to optimize its weight parameters,and get new model RFGM(1,1),the RGM(1,1) model and the RFGM(1,1) new model are used to predict the trend of contact resistance.After a comparative analysis of the prediction results,it shows that the new model has a higher prediction Accuracy.

Key words: firefly algorithm, grey model, contact resistance, relay, life prediction