Efficiency of electronic devices for unsteady flow of failures/Elektroniniu itaisu efektyvumas esant nestacionariam gedimu srautui

Electronic devices inspected by using built-in test equipment are analyzed. The method of calculation of efficiency of devices for a case of unsteady Poisson flow of failure is offered. The method is based on estimation of the bottom and top limits for values of efficiency on analyzed interval of exploitation. For this purpose, efficiency of devices for corresponding Poisson flows of failures is calculated. A relative error of definition of efficiency value is defined. As an estimation of an error, its maximal value is used. Computing experiment according to the given error is executed. Experiment considers really possible values of the parameters influencing efficiency of the device. Results of experiment show that the maximal relative error of an estimation of a parameter of efficiency does not exceed 6.5 % . Bibl. 9, tabl. 1 (in English; abstracts in English and Lithuanian). Analizuojami elektroniniai itaisai, kuriu darbingumo kontrole atliekama vidiniais kontroles irenginiais. Siulomas metodas itaisu efektyvumui nustatyti esant nestacionariam Puasono gedimu srautui. Metodas grindziamas efektyvumo virsutiniu ir apatiniii ribu analizuojamame eksploatacijos intervale vertinimu. Siuo tikslu apskaiciuojamos tam tikru Puasono srautu atitinkamos efektyvumo vertes. Nustatoma santykine efektyvumo vertinimo paklaida. Nagrinejama santykines efektyvumo nustatymo paklaidos maksimali verte. Atliktas skaiciavimo eksperimentas, apimantis realu efektyvumo vertems jtakos turinciu parametru diapazona. Eksperimento rezultatai rodo, kad santykines efektyvumo nustatymo paklaidos maksimali verte nevirsija 6,5 %. Bibl. 9, lent. 1 (anglu kalba; santraukos anglu ir lietuviu k.).