Managing the Mechatronic Systems Obsolescence Based on Monitoring of Resource Fault Tolerance

The article discusses the features of the manifestation of advanced obsolescence of electronic components of mechatronic systems in comparison with the physical aging of their electromechanical and mechanical modules. The relevance of managing the obsolescence of mechatronic systems has been revealed through early planning and implementation of measures to ensure that the product is ready for target use throughout its specified service life. It is proposed to implement obsolescence management by justifying the supply routes of replaceable components in conditions of obsolescence of products, accompanied by a decrease in the availability of spare parts due to their decommissioning. The main types of obsolescence of mechatronic systems are considered, including functional, technical and economic obsolescence and degradation of resource fault tolerance. The main results of the development of a mathematical model of degradation of the resource fault tolerance of a mechatronic system based on the analysis of obsolescence trees are presented. The apparatus of obsolescence trees provides an opportunity to model the causal relationships between the transition of a mechatronic system to a state of irreversible failure, failures of system elements and the probabilities of carrying out measures to manage the obsolescence of a mechatronic system in conditions of its obsolescence. During the development of the model, an integral equation of obsolescence of a mechatronic system with degradation of resource fault tolerance was obtained, an approximate method of solving it was proposed, as a result of which point and interval estimates of forecasts of the values of the gamma percent service life of a mechatronic system before the onset of obsolescence were obtained. Expressions are obtained to determine the preferred ways to compensate for the obsolescence of a mechatronic system with degradation of resource fault tolerance according to the criterion of maximum technical and economic efficiency. An algorithm for choosing the preferred method of managing obsolescence of a mechatronic system in terms of technical and economic efficiency is presented.

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