As a result of theoretical researches, developed mathematical and research models, an important scientific and technical problem of constructing expert systems for estimation the quality of processes of technical objects during their life cycle is solved, which enables monitoring, diagnostics and forecasting of their functioning based on a qualitative state estimation. The following results are obtained:
Theoretical principles of constructing expert quality systems based on the theory of functional systems P.K. Anokhin is developed, in this context, the notion of a technical system as a set of mutually supportive components is defined. The construction of functional systems in the form of virtual networks of quality, which allows their research using the mathematical apparatus of graph theory and theory of networks, is proposed. The presentation of technical systems in the form of their sensory infrastructures is proposed - sensors systems, which in this context are treated as analogues of biological information channels. The presentation of technical systems in the form of their sensory infrastructures - sensors systems, which in this context are treated as analogues of biological information channels, is proposed. The definition of sensory-hardware, sensory-functional and sensory-software infrastructures is given. A set-theoretical model of sensory infrastructure and a set-theoretical model of the informational state of an arbitrary technical system are developed.
In order of quantitative determination of the informational state of the technical system and its components, an approach based on an entropy determination of the informational state of sensors is justified. The entropy sensory models of the informational state and the relative informational state of the technical system are developed. The V-model of technical systems processes and the dual-V process model of the System of Systems are developed, which, unlike the classical model, allows to analyze the functioning of its components at all stages of the life cycle using a process approach. A dual-V process model for estimation the quality of the technical system in the context of its membership in the System of Systems is proposed, the set-theoretical models of quality indicators and quality estimation that correspond to the requirements of the standard quality measurement model proposed in the standards series ISO 25000, are developed. The function of quality estimation, based on the entropy approach to the determination of the informational state of sensors, is developed. It is shown that the proposed function is universal and satisfies all the requirements for the function of technical system quality estimation. The qualimetric scale corresponding to the function is offered. It has a dynamic range of estimation and is automatically adapted to the technical requirements.
The mathematical model of qualitative determination of the state of the technical system, based on the entropy quality estimation, its components and the network model of the functional system of monitoring the quality of the technical system, which enables identification of the components of its sensor infrastructure with inadequate mutual perception, which means their failure, is developed. An entropy model for estimation the quality of life cycle processes of technical systems and a network model of functional system of diagnostics of technical systems, which enables to determine the processes of the exploitation stage of TS inadequate mutual perception, the use of which could lead to deterioration of the quality state of components of the technical system, is developed.
The functional systems of forecasting-diagnostics and forecasting-prediction are determined. The network model of the functional forecasting-diagnostic system, which enables to determine the processes of the systems of provision and operational environment that do not correspond to the high measure of mutual perception and application of which in the corresponding stages of the lifecycle of Systems of Systems could lead to poor-quality processes of the stage of exploitation of the technical system, is developed.
