Hidden functional failure detection model of electronic equipment

In order to solve the problems of decision-making on inspection intervals of hidden functional failures for electronic equipment, a mathematical model was developed using probability and stochastic process theories. The maintenance costs were modeled by using the concept of delay time and considering the imperfect inspections. The optimal intervals of inspections were obtained by minimizing expected maintenance cost per unit time. And then, the corresponding optimization algorithm was presented, and an example was provided to show the optimization process and rectify the effectiveness of the algorithm.