Adaptive feedforward and feedback control of non-linear time-varying uncertain systems

Authors
Citation
W. Wu et Ys. Chou, Adaptive feedforward and feedback control of non-linear time-varying uncertain systems, INT J CONTR, 72(12), 1999, pp. 1127-1138
Citations number
18
Categorie Soggetti
AI Robotics and Automatic Control
Journal title
INTERNATIONAL JOURNAL OF CONTROL
ISSN journal
00207179 → ACNP
Volume
72
Issue
12
Year of publication
1999
Pages
1127 - 1138
Database
ISI
SICI code
0020-7179(19990815)72:12<1127:AFAFCO>2.0.ZU;2-Y
Abstract
An adaptive regulation scheme is proposed for a class of non-linear time-va rying systems with parametric uncertainties. The proposed approach is based upon a combination of the adaptive backstepping design method and a feedfo rward control scheme to design a non-linear adaptive feedforward and feedba ck controller, such that robust output tracking can be achieved even in the presence of structured uncertainties, as well as time-varying, measurable disturbances. Although the systematic design procedure does not a priori sa tisfy the feedback linearizable system with triangular structures, however, the constructed condition must be satisfied to ensure that the control sch eme has a stable inversion. Under the feasibility condition, the states of the resulting closed-loop system would be guaranteed boundedness and conver ge to a bounded set. Finally, the proposed methodology is illustrated by a chemical reactor example.