Resumen
Methodological solutions for improving the management of sustainable operation of big technical systems in adverse conditions are presented. The article proposes a model of stability of big technical systems in a form of a set of interdependent tables and criteria of systems? stability that describe a system?s condition under the destructive influence. The model describes states of a system?s stability by means of unified tables. The model presents dynamics of a state of stable functioning of a system based on changes of values of the quality indicators. The model forms basic data for its systematic application in the methodology to calculate a complex indicator of a system?s stability. The method described in the article presents an approach to assessment of a technical system?s stability based on the calculation of the criterion of effectiveness of a complex system when dividing the system?s elements into three functional groups. To apply the method on practice the author proposes to use a specially designed software. The main positive effect from the application of the proposed method is a considerable decrease of time and resources needed for assessing stability, for modeling the processes of ensuring the stability of systems and a possibility of software realization of a rational processing of information in the process of management of big technical systems? maintenance.