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Определение характеристик над¨жности радиоэлектронных систем

Определение характеристик над¨жности радиоэлектронных систем

Abstract

There are two main kinds of tests for reliability. One of them is standard test, which is used for large-scale products. The aim of the standard tests is to evaluate the parameters of reliability. Other type of the tests is control tests, which check the compliance to specifications of an indicator of reliability of the system. The paper studies the second type of the tests. The aim of the study is to decide whether these the characteristics of reliability of a product (made by radio-electronic systems) correspond to the set requirements provided by specifications on production of a product. For the solution of this task the mathematical apparatus of the statistical theory of hypotheses is used. Two hypotheses are considered: the hypothesis the average time of operation for failure is set by the requirements of specifications (a product is good); a hypothesis the average time of operation for failure alternative (a product is bad). The procedure of checking the hypotheses has a shortcoming, i. e. the quality of the solution is defined after carrying out the tests. Such procedure of checking the hypotheses is not optimum. The paper presents the consecutive procedure of checking the hypotheses (Wald's procedure), which assumes decision-making after each refusal and a stop of tests, if decision-making with the set quality is possible. The algorithm of checking the compliance of the law of distribution of the received selection to indicative or other law of distribution by criterion is shown.

Существуют два основных вида испытаний на надёжность. Один из них определительные испытания, которым подвергаются крупносерийные изделия. Задача определительных испытаний оценка показателей надёжности. Другой вид контрольные испытания, в ходе которых осуществляется проверка соответствия техническим условиям показателя надёжности системы. Исследуется второй вид испытаний. Цель исследования выяснить, соответствуют ли характеристики надёжности изделия (изготовленной радиоэлектронной системы) заданным требованиям, предусмотренным техническими условиями на изготовление изделия. Для решения задачи используется математический аппарат статистической теории гипотез. Рассматриваются две гипотезы: гипотеза среднее время наработки на отказ задаётся требованиями технических условий (изделие хорошее); гипотеза среднее время наработки на отказ альтернатива (изделие плохое). Отмечен недостаток процедуры проверки гипотез качество решения определяется после проведения испытаний, т. е. такая процедура проверки гипотез не является оптимальной. Предложена последовательная процедура проверки гипотез (процедура Вальда), которая предполагает принятие решения после каждого отказа и остановку испытаний, если возможно принятие решения с заданным качеством. Показан алгоритм проверки соответствия закона распределения полученной выборки показательному или другому закону распределения по критерию.

Keywords

РАДИОЭЛЕКТРОННАЯ СИСТЕМА,ПРОЦЕДУРА ИСПЫТАНИЙ,ДЛИТЕЛЬНОСТЬ ИСПЫТАНИЙ,ПРАВИЛО НЕЙМАНА ПИРСОНА,ПРОЦЕДУРА ВАЛЬДА,КРИТЕРИЙ,RADIO-ELECTRONIC SYSTEM,PROCEDURES OF TESTS,DURATION OF TESTS,NEUMANN PEARSON''S RULE,WALD''S PROCEDURE,CRITERION

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold