Применение аппарата нечетких множеств в расчете надежности оборудования нефтегазового промысла

Abstract

Oil and gas equipment, and electric motors in particular, often operate in different duty cycles under changing environmental conditions. The exact effect of these factors on the equipment reliability is rather uncertain. Defining the reliability parameters as fuzzy numbers allows managing such uncertainty. The paper provides an example of fuzzy-valued reliability function estimation. Four-parameter additive Weibull distribution is considered as a reliability model with bathtubshaped failure rate function.