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- Ahmad N. Atassi, Hassan K. Khalil
- IEEE Trans. Automat. Contr.
- 1999

- Hassan K. Khalil
- 2009 IEEE International Conference on Control and…
- 2009

The theory of high-gain observers has been developed for about twenty years. This talk is a brief introduction to high-gain observers in nonlinear feedback control, with emphasis on the peaking phenomenon and the role of control saturation in dealing with it. The talk surveys recent results on the nonlinear separation principle, extended high-gain… (More)

- Hassan K. Khalil, Petar V. Kokotovic
- Automatica
- 1979

The singular perturbation theory is extended to systems with several small parameters which can change the system order. Difficulties arising in testing the boundary layer stability in multiparameter linear problems are discussed. The theory is applied to linear quadratic optimal control and Nash game problems.

- Sridhar Seshagiri, Hassan K. Khalil
- IEEE Trans. Neural Netw. Learning Syst.
- 2000

An adaptive output feedback control scheme for the output tracking of a class of continuous-time nonlinear plants is presented. An RBF neural network is used to adaptively compensate for the plant nonlinearities. The network weights are adapted using a Lyapunov-based design. The method uses parameter projection, control saturation, and a high-gain observer… (More)

- Jeffrey H. Ahrens, Hassan K. Khalil
- Automatica
- 2009

This paper considers output feedback control using high-gain observers in the presence of measurement noise for a class of nonlinear systems. We study stability in the presence of measurement noise and illustrate the tradeoff when selecting the observer gain between state reconstruction speed and robustness to model uncertainty on the one hand versus… (More)

- Leonid B. Freidovich, Hassan K. Khalil
- IEEE Trans. Automat. Contr.
- 2008

- Ahmad N. Atassi, Hassan K. Khalil
- IEEE Trans. Automat. Contr.
- 2001

- Hassan K. Khalil
- IEEE Trans. Automat. Contr.
- 2000

- Seungrohk Oh, Hassan K. Khalil
- Automatica
- 1997

- Hassan K. Khalil
- Automatica
- 1994