Title :
Gain and phase margin for multiloop LQG regulators
Author :
Safonov, Michael G. ; Athans, Michael
Author_Institution :
M.I.T., Cambridge, MA, USA
fDate :
4/1/1977 12:00:00 AM
Abstract :
Multiloop linear-quadratic state-feedback (LQSF) regulators are shown to be robust against a variety of large dynamical linear time-invariant and memoryless nonlinear time-varying variations in open-loop dynamics. The results are interpreted in terms of the classical concepts of gain and phase margin, thus strengthening the link between classical and modern feedback theory.
Keywords :
Asymptotic stability; Linear systems, time-invariant continuous-time; Nonlinear systems, time-varying; Optimal regulators; Perturbation methods; Sensitivity analysis; State-feedback; Time-varying systems, nonlinear; Control system synthesis; Design engineering; Open loop systems; Output feedback; Poles and zeros; Regulators; Robust control; Robustness; Servomechanisms; State feedback;
Journal_Title :
Automatic Control, IEEE Transactions on
DOI :
10.1109/TAC.1977.1101470
