Simulation models based on Petri nets for the analysis of maintenance and repair processes of complex technical systems

The presented review analyzes the approaches and methods of using simulation models in maintenance repair organization complex technical objects systems. development concept "Industry 4.0" Internet things involves transition from periodic preventive to predictive based on study processes during object operation. It is shown that system Petri nets are convenient for describing analyzing technological equipment maintenance. effectiveness timed stochastic colored virtual tests design procedures systems revealed. use hierarchical allows building describe interrelated processes. A general model a network proposed deterioration degradation aggregates elements form strategy. includes Gantt chart production tasks, set active reserve units, modules. examples various considered. Solutions flexible systems, railway bridges, offshore wind turbines, an aircraft fleet, group robotic vehicles, computer enterprise given. strategies considered generality shown. article formulates methodological principles constructing networks simulate operation known software tools implementation nets. summary concludes promising organizing