Method of determination

of generalized dynamic characteristics of circulation contours

S.I.Korolev, S.Y.Chakchir

The Baltic State Technical University ofљ D.F.Ustinov's name

1-st Krasnoarmeiskaya, 1, Saint-Petersburg, 198005, Russia,

The circulation contours of thermal control systems (TCS), supplying a given temperature mode, by means of redistribution of streams of "hot" and "cold" heat carriers, discover broad applying not only in a space engineering, but also in different heat-technical and heat power systems of the most broad assigning.

Particular features of such aspect of systems are:

- considerable transportation lags in pipelines at thermal medium circulation of heat carriers;

- dimensional distribution of temperature arguments of many elements and aggregates;

- availability of different straight and reverse calorific bond between elements and between contoursљ (including by means of bypass pipelines);

- non-steady characterљ and dimensional distributionљ of a heat load.

The supply of controllability of this class of systems, precision fidelity, high quality of dynamic processes demanded indexes of reliability introduces an enough complicated problem, both for theory, and for practice of projection of TCS.

The practice of elaboration and exploitation of TCS of most complicated space objects (including orbital complexes of MIR and ISS) demonstrates, that there are definite problems both in supply of stable conditions of function, and at reaching precision fidelity of stabilizing of temperature in aggregates of TCS.

Largely these problems are conditioned by complication of identifying of concept "object of control" with reference to circulation contours of TCS.

In the work the method permitting on the basis of the system - structural approach to in study generalized dynamic characteristics of circulation contours and to receive particular proportions for their determination is offered.

The method, tendered in at this article, of generalized dynamic characteristics of circulation contours of thermal control systems allows to receive a high degree of adequacy of approximated and real dynamical characteristics on its beginningљ (in high frequency field), that is most essential at synthesizing channel parameters of control of circulating of TCS.