ADAPTIVE OUTPUT FEEDBACK CONTROL FOR A CLASS OF PLANAR NONLINEAR SYSTEMS

作者：Shang Fang; Liu Yungang^*; Zhang Chenghui

来源：Asian Journal of Control, 2009, 11(5): 578-586.

DOI：10.1002/asjc.139

• Planar nonlinear systems
• uncertain control coefficient
• high-gain K-filters
• output feedback
• adaptive control

This paper is concerned with the problem of global adaptive stabilization by Output feedback for a class of planar nonlinear systems with uncertain control coefficient and unknown growth rate. The control coefficient is not Supposed to have known upper bound, and this relaxes the corresponding requirement in the existing literature (see e.g. [1, 2]). First, by the universal control method, an observer is constructed based on the dynamic high-gain K-filters. Then, the control design procedure is developed to obtain the stabilizing controller and dynamic compensator for the uncertainties in the control coefficient. It is shown that the global stability of the closed-loop system can be guaranteed by the appropriate choice of the design parameters. A simulation example is also provided to illustrate the correctness of the theoretical results.

• 出版日期2009-9
• 单位山东大学