Robust control of complex dynamic units with interval parameters

In this paper the research of the interval system containing a linear controller and a control unit with interval- undetermined parameters is conducted. Using the coefficient estimations of quality coefficient of the system, the methods of analysis and synthesis of robust quality parameters of a robust controller ensuring maximum stability degree by the oscillation and control accuracy limits is developed. Sufficient conditions uniting the interval coefficients of the characteristic polynomial of a closed-loop system and analyzing robust quality coefficients serve as the basis for the methodology. These conditions are based on the proven statements. An example of the analysis and synthesis of the system stabilization of an underwater object location is given in this paper.