Title :
Necessary conditions for absolute stability of nonlinear regulators
Author_Institution :
University of Salford, Department of Aeronautical & Mechanical Engineering, Salford, UK
Abstract :
Simple necessary conditions involving the fundamental frequency-domain concept of transmission zeros are established for the absolute stability of nonlinear regulators. These results significantly complement the sufficient conditions provided by the Popov criterion in the analysis and synthesis of nonlinear control systems.
Keywords :
Popov criterion; nonlinear control systems; Popov criterion; absolute stability conditions; frequency domain; nonlinear regulators; transmission zeros;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19800130
