Paper:

# Adaptive Regulation of Nonlinear Systems by Output Feedback

## Mai Bando and Akira Ichikawa

Department of Aeronautics and Astronautics, Graduate School of Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto, 606-8501, Japan

In this paper adaptive regulation by output feedback is considered for a class of single-input/single-output nonlinear systems described by multiple linear models. The adaptive laws are based on the filtered state and input of an adaptive observer. Then a controller is given by a state-dependent Riccati equation, which assures the stability of the adaptive system. Simulation results are given to illustrate the theory.

*J. Robot. Mechatron.*, Vol.20, No.5, pp. 719-725, 2008.

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