Abstract
The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the engineering system and with the aim of a systematic approach to asset management. The analysis included all relevant parameters of machine operation to aid the decision-making process during the next purchase. The method presented in this paper relies on Fuzzy theory and represents another approach to the analysis of existing data in addition to methods based on Multi-Criteria Decision Making (MCDM).
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