Westinghouse Method Oriented Fuzzy Rule Based Tempo Rating Approach

One of the most important subjects within the time study activities is tempo rating. Determining the accurate tempo for the workers plays an important role for determining the normal time of the work. There are various methods for determining the pace. One of the basic ones is the Westinghouse method based on four factors that are used while regarding the performance of the operator; skill, effort, conditions and consistency. In the usual Westinghouse method, there is a scale of crisp numerical values for each factor. With this study, a fuzzy rule based method is used to determine the performance values of the workers depending on the vague decision making structure. Different from the existing structure of the Westinghouse method, a system consisting of fuzzy rules is developed for computing the performance rates. The developed system is tested on a numerical example for showing the applicability.