Inteligentni sistem za oddaljeno spremljanje stanja mineralnih hidravličnih olj : doktorska disertacija

slovenian

doktorska dela

2013

Univerza v Mariboru, Fakulteta za strojništvo

The dissertation discusses the condition-monitoring of hydraulic fluids throughout their life-cycles. Particular emphasis is placed on quantitatively assessing,in detail, one mineral oil's condition and its remaining useful lifetime. Practicality and usefulness are vital when developing and deploying various methods for condition-monitoring systems within industrial environments. Therefore, this dissertation focuses on the development and application of an intelligent system for assessing an oil's condition and its remaining useful lifetime and the capability of independently, without the help of an expert, examining the physical-chemical properties of a hydraulic oil, thus providing information on its condition. For the assessment of an oil's condition and its remaining useful lifetime, this dissertation proposes a hybrid mathematical model based on gathered data from previously conducted oil-ageing tests. The adequacy of the developed hybrid model was first validated using the same data from the oil-ageing tests and was then further used when constructing the model. The following shows an implementation of themodel within a real industrial system, which indicates the practical applicability of the developed system. This model is able to successfully and accurately assess the oil's condition and its remaining useful lifetime after the oil has only reached one third of its lifetime.

08.08.2023