Inspec keywords: adaptive control; nonlinear control systems; delay systems; fuzzy systems; closed loop systems; state estimation; Lyapunov methods; time-varying systems; feedback

Other keywords: output tracking; unknown control direction; fuzzy approximator; adaptive backstepping method; tracking error; signal boundedness; system state; adaptive control; time varying system; fuzzy state observer; adaptive output feedback controller; Lyapunov-Krasovskii functional; transient performance; Nussbaum type function; delay system; closed loop system; steady state performance; nonlinear system; adaptive parameter; backstepping method; semiglobally uniform

Subjects: Time-varying control systems; Self-adjusting control systems; Nonlinear control systems; Fuzzy control; Distributed parameter control systems