Title :
Semiglobal L2 performance bounds for disturbance attenuation in nonlinear systems
Author :
Isidori, Alberto ; Schwartz, Ben ; Tarn, T.J.
Author_Institution :
Dept. of Syst. Sci. & Math., Washington Univ., St. Louis, MO, USA
fDate :
8/1/1999 12:00:00 AM
Abstract :
This paper addresses the problem of disturbance attenuation (in the sense of L2-gain), with internal stability and no cost on the control input, for nonlinear systems, when the problem of almost disturbance decoupling is not solvable, i.e., when the least achievable attenuation level between disturbance and regulated output is nonzero. Two different approaches are provided, which facilitate the estimation of an upper bound for such a value
Keywords :
Lyapunov methods; control system analysis; nonlinear systems; stability; Lyapunov function; SISO systems; disturbance attenuation; internal stability; nonlinear systems; performance bounds; semiglobal solution; upper bound; Attenuation; Control systems; Costs; Linear systems; Nonlinear control systems; Nonlinear dynamical systems; Nonlinear systems; Output feedback; Stability; Upper bound;
Journal_Title :
Automatic Control, IEEE Transactions on
