Title :
An adaptive inverse compensation scheme for signal-dependent actuator nonlinearities
Author :
Deb, Dipankar ; Tao, Gang ; Burkholder, Jason O.
Author_Institution :
Univ. of Virginia, Charlottesville
Abstract :
In this paper, a unified adaptive compensation scheme for controlling signal-dependent actuator nonlinearities in a class of nonlinear system is presented. Approximation of a nonlinearly parametrized actuator model by a linearly parametrized function is performed. Adaptive inversion of actuator nonlinearities for the linearly approximated model is performed by adopting another approximator in the feedforward path. A nonlinear state feedback control law is designed for controlling the nonlinear dynamics. Parameter projection based adaptive laws are used to ensure desired closed-loop stability.
Keywords :
adaptive control; aerospace control; approximation theory; closed loop systems; compensation; control nonlinearities; feedforward; jets; nonlinear control systems; nonlinear dynamical systems; stability; state feedback; adaptive inverse compensation; closed-loop stability; feedforward path; linearly approximated model; linearly parametrized function; nonlinear dynamics; nonlinear state feedback control law; nonlinear system; nonlinearly parametrized actuator model; signal-dependent actuator nonlinearities; synthetic jet actuator; Adaptive control; Control nonlinearities; Control systems; Hydraulic actuators; Linear approximation; Nonlinear control systems; Nonlinear dynamical systems; Nonlinear systems; Programmable control; State feedback; Actuator nonlinearity; adaptive inverse; nonlinear aircraft dynamics; stability; synthetic jet actuators;
Conference_Titel :
Decision and Control, 2007 46th IEEE Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1497-0
Electronic_ISBN :
0191-2216
DOI :
10.1109/CDC.2007.4434743
