Computer-aided analysis and design of robust control systems using root locus techniques

摘要

The problem of robust control systems analysis and synthesis is currently one of the central problems of the control theory. There exist series of program packages for investigation and design of uncertain control systems based on the corresponding analytical methods, which r application allows either to verify the given system stability or to calculate the parameters deviations from the nominal values ensuring the system hurwitz or generalized stability. This paper presents the software package base don application of root sensitivity functions, root loci fields, root loci portraits of uncertian control systems. Its application allows not only to verify the uncertain (interval) control system stability, but, unlike the existing ones, also to provide with recommendations for calculation of the variable parameters limit values ensuring the system robust stability in the cases when the nominal system is unstable. Copyright ~direct 2000 IFAC