FUZZY QUEUEING MODEL WITH AN UNRELIABLE SERVER USING ROBUST RANKING TECHNIQUE

Abstract

This paper describes a method to find the variety of performance measures are in crisp values for fuzzy queueing model with an unreliable server where the service rate, entry rate, breakdown(collapse) rate and repair rate. These all rates are in some types of fuzzy numbers. After defuzzifying the fuzzy numbers apply the classical queueing performancemeasures formulas. Numerical examples are showing the implementation of the method.