Guidelines for preparation of articles for theacademic periodical "marine intellectual technologies
The paper presents the results of the authors on the study of robust behavior of interval polynomials. Research objectives of stability and instability in the presence of uncertainty in the parameter space of the automatic control often occur at the stages of analysis and synthesis of such systems. Interval description of the uncertainty in the coefficients of the characteristic polynomial of the first approximation system is one of the simplest and most commonly used in engineering practice. The article shows the features of behavior of polynomials with real and complex coefficients. A study of robust instability of systems whose behavior is described by characteristic polynomials forms a theoretical basis for the development of high-speed and effective controllers. Such controllers will allow changing the parameters of the system quickly and with minimal energy and time. The results are theoretical, but they are aimed to solve problems which appears in development and operating ship control systems.