Recurrent expressions for modelling time reliability indices of compound electromagnetic systems

A method of investigation of reliability parameters of compound systems by means of generating functions is developed taking account of aging of the system´s output elements. Main time reliability indices of compound electromagnetic systems are examined in this paper. Expressions for the average duration of the system´s stay in each of its states and the average duration of the system´s stay in the prescribed availability condition are worked out in cases when the lifetime of ageing output elements is circumscribed by the Weibull distribution.