Estimation of bucket wheel excavator remaining capability using fuzzy theory

Evaluation model for bucket wheel excavator remaining capability is analyzed in this paper. Model was formed to introduce fuzzy theory in dependability analysis regards to performances of reliability, maintainability and maintenance support, as well for synthesis of dependability from lowest to higher level of excavators' structure. Dependability was used as the most complex performance which covers in total quality of service for specific technical system and fuzzy sets theory was introduced as a convenient mathematical model that gives mutual synergy to calculations with hybrid data.