Accession Number : AD0696164

Title :   THE PROBLEM OF THE INFLUENCE OF AUTOMATIC MONITORING ON THE RELIABILITY OF SYSTEMS WITH REDUNDANCY,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Zolkover,T. D. ; Perov,V. I. ; Tarasova,L. S.

Report Date : 02 SEP 1969

Pagination or Media Count : 11

Abstract : Systems with active parallel redundancy in which reserve elements (RE) are controlled by check-and switchover (ChS) units is considered. A set of differential equations describes the reliability conditions in terms of failure rates and r sub m (probability that a branch failure is accompanied by elimination or self-elimination of RE). As a result, the probability of successful operation of the entire system is determined. These particular cases are considered: (1) failure rates are constant in time (exponential law of distribution of reliable-operation time); (2) a definite ratio of failure rates of RE and ChS; (3) reliability characteristics of RE and ChS do not change when the number of branches changes; starting from a certain value of the redundancy rate, the probability of successful operation decreases. When the probability of RE self-elimination is sufficiently high, ChS devices are superfluous.

Descriptors :   (*REDUNDANT COMPONENTS, *CIRCUITS), (*RELIABILITY(ELECTRONICS), CIRCUITS), SWITCHING CIRCUITS, CIRCUIT INTERCONNECTIONS, CONTROL SYSTEMS, AUTOMATIC, MONITORS, FAILURE(ELECTRONICS), FAILURE, MULTIPLE OPERATION, OPTIMIZATION, PROBABILITY, DIFFERENTIAL EQUATIONS, MAINTENANCE, DESIGN, USSR

Subject Categories : Electrical and Electronic Equipment
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE