%0 Journal Article %T POSSIBILITIES OF CYBER-PHYSICAL APPROACH TO STUDYING FREQUENCY PROPERTIES OF CLOSED SYSTEM WITH INCOMPLETE INFORMATION ABOUT CONTROL OBJECT MODEL %A Krushel, E.. %A Potafeeva, E.. %A Ogar, T.. %A Stepanchenko, I.. %A Kharitonov, I.. %K control object, amplitude-phase characteristic, nonparametric estimates, frequency characteristics of the object, input and output signals, closed system stability, Scilab %J Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics %D 2021 %N %P 13 %I Astrakhan State Technical University