RESEARCH OF INFORMATION AND DYNAMIC MODELS OF CONTROL AND DIAGNOSTICS OF TV3-117 AIRCRAFT ENGINE TECHNICAL STATE

Abstract

The subject matter of the article is TV3-117 aircraft engine and methods for monitoring and diagnosing its technical condition. The goal of the work is development of information and dynamic models for monitoring and diagnosing the technical condition of TV3-117 aircraft engine to determine the basic requirements for an expert system. The following tasks were solved in the article: development of information and dynamic models for monitoring and diagnostics of TV3-117 aircraft engine using the methodology of system analysis. The following methods used are – methods of system analysis, methods of system programming, methods of constructing information models. The following results were obtained – An information model has been developed that defines the logical structure of databases and knowledge, as well as methods and mechanisms for managing and interacting with them (substantiation of content, content, management of information flows). A dynamic model has been developed that defines the rules for working with an expert system, which is the basis for creating an interface (scenarios) with a user and determines the dynamics of the interaction of an expert system with databases and knowledge, a model for monitoring and diagnosing of TV3-117 aircraft engine technical condition. Conclusions: A set of information models was developed for the process of monitoring and diagnosing the technical condition of the TV3-117 aircraft engine, based on IDEF / 1X technology, which made it possible to determine the logical structure and mechanisms of interaction between databases and knowledge bases as part of an expert system for monitoring and diagnosing the technical condition of TV3-117 aircraft engine. A dynamic model of the processes for monitoring and diagnosing the technical condition of TV3-117 aircraft engine based on IDEF / CPN was developed, which made it possible to determine the requirements for the inference mechanism in the process of performing the functions of monitoring and diagnosing the technical condition of TV3-117 aircraft engine by an expert system. Research prospects – the final stage of system modeling is a system project that forms the contours of a research prototype of an expert system and a list of requirements that implement it.