Aerospace Technic and Technology

The object of study in the article is the vortex effect of temperature separation in a rotating gas flow, which is realized in small-sized vortex energy separators. The subject matter of this article is the process of forming diagnostic models of inoperable states of a vortex energy separator device as a rational control object when destabilizing influences appear. The goal is to develop an analytical approach to the formation of digital diagnostic models for rational control of cold and hot air flow temperatures that reflect the effects of direct signs of inoperable states of the vortex energy separator device that are inaccessible to measurement with indirect signs accessible to measurement. The tasks are to study the features of the process in the vortex energy separator device; to describe a rational control system of the vortex energy separator device; to analyze the experimental characteristics of the vortex energy separator device; to form linear mathematical models of the nominal mode of the vortex energy separator device; to develop linear diagnostic models that describe the inoperable states of the vortex energy separator as a rational control object; to form logical signs of diagnosing using diagnostic models. The methods used are the method of transfer functions, the method of the discrete states space, the method of diagnostic models, the method for forming production rules, the method of formation of two-digit predicate equations. The following results were obtained: linear mathematical models of functional elements and the entire device as a whole were formed for the nominal operation mode. Linear digital diagnostic models were developed for the inoperable states of the vortex energy separator device. Logical signs of diagnosis were formed on the basis of the diagnostic models. Conclusions. The scientific novelty lies in the formation of an analytical approach to the development of digital diagnostic models of inoperable states of the vortex energy separator device and two-digit predicate equations of indirect signs for a dichotomous diagnostic tree.

vortex energy separator device; rational control; destabilizing influences; linear mathematical models; digital diagnostic models; two-digit predicate equations

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