Aerospace Instrument-Making Annotation << Back THE IDENTIFICATION OF THE PLANT PARAMETERS OF AUTOMATIC CONTROL SYSTEM IN NORMAL MODE BASED ON EFFICIENCY MARGINS ON RESIDUALS G.P. Losev, E.N. Mahanek, T.N. Lozhkina, S.V. Sleptsova, S.N. Tsukanova This paper provides the results of theoretical validation of identifi cation approach for complex dynamical plants nominal operating conditions. The proposed approach based on efficiency margins and the results of probabilistic tests (Monte-Carlo method). It is proved that there exists the monotonic dependency of fulfillment probability of feasible errors deflection specifi ed constraints between flight test results and Monte-Carlo estimations, and provided efficiency margins form. In this method we determine the random realization, which is closer in terms of identifi cation probability to fl ight tests and which is explicitly defi nes full list of disturbed parameters, internal and external disturbances. The effi ciency of the approach is shown on the example of application of this approach and corresponding identifi cation software to the analysis of carrier rocket «Soyuz-2» launch (flight tests № 2) with the spacecraft «Meteor-M2.1»… from the «Vostochny» space center 28/11/2018. This application allows us to detect the number of signifi cant inaccuracies of mathematical model versus the flight test results. Key words: identifi cation, probabilistic approach, mathematical model, automatic control systems, effi ciency margins, flighct tests, launch vehicle, Soyuz-2, «Vostochny» space center. DOI: 10.25791/aviakosmos.08.2018.097 Contacts: E-mail: avt@npoa.ru Pp. 17-24.