ADAPTIVE CONTROL FOR UNCERTAIN SYSTEMS WITH SECTOR-LIKE BOUNDED NONLINEAR INPUTS

In this paper, a general approach to the synthesis of model reference adaptive control systems is proposed for uncertain time -delay systems with the so-called sector-like bounded nonlinear inputs via hyperstability theory. In the presence of system parameter variations and external disturbances, it can be ensured that the system output can track the reference model output asymptotically. Finally, some computer simulations are given to illustrate the performance of the proposed adaptive control scheme.

[1]  Liu Hsu,et al.  Adaptive control with discontinuous σ-factor and saturation for improved robustness , 1987 .

[2]  Model-Reference Adaptive Control Of Time-Delayed Linear Systems , 1985, Nineteeth Asilomar Conference on Circuits, Systems and Computers, 1985..

[3]  Gang Tao,et al.  Discrete-time adaptive control of systems with unknown deadzones , 1995 .

[4]  R. Hotzel,et al.  Adaptive tracking strategy for a class of nonlinear systems , 1998, IEEE Trans. Autom. Control..

[5]  K. Narendra,et al.  Bounded error adaptive control , 1980, 1980 19th IEEE Conference on Decision and Control including the Symposium on Adaptive Processes.

[6]  L. Praly.  Robustness of Indirect Adaptive Control Based on Pole Placement Design , 1983 .

[7]  Gang Tao,et al.  Discrete-time adaptive control of systems with multisegment piecewise-linear nonlinearities , 1998, IEEE Trans. Autom. Control..

[8]  Y. Miyasato.  Model reference adaptive control for nonminimum phase systems with time delay by periodic feedback , 1991, [1991] Proceedings of the 30th IEEE Conference on Decision and Control.

[9]  Vasile Mihai Popov,et al.  Hyperstability of Control Systems , 1973 .

[10]  H. Khalil.  Adaptive output feedback control of nonlinear systems represented by input-output models , 1996, IEEE Trans. Autom. Control..

[11]  Marios M. Polycarpou,et al.  A Robust Adaptive Nonlinear Control Design , 1993, 1993 American Control Conference.

[12]  Zhong-Ping Jiang,et al.  Design of Robust Adaptive Controllers for Nonlinear Systems with Dynamic Uncertainties , 1998, Autom..

[13]  Weiping Li,et al.  Applied Nonlinear Control , 1991 .

[14]  Michael A. Henson,et al.  Direct adaptive control of partially known nonlinear systems , 1997, IEEE Trans. Neural Networks.