Incremental Peak-to-Peak Gain Computation and Regulation of Discrete-Time Positive Luré Systems using Linear Programming

Abstract

Incremental gains provide a quantitative measure of robustness for trajectories of a dynamical system. Finite incremental gains ensure that all pairs of trajectories will together converge to a fixed point or will diverge together in the absence of an applied input. This work approaches the problem of computing the incremental peak-to-peak gains for positive linear systems in Luré feedback with static memoryless nonlinearities, and regulating the incremental ${\ell }_{\infty }$ gain through the design of a state-feedback controller. Upper-bounds on these incremental gains can be computed through linear programming. Computation and state-feedback regulation of the ${\ell }_{\infty }$ incremental gain is verified by numerical examples.

11 pages, 4 images