Performance recovery under output feedback sampled-data stabilization of a class of nonlinear systems

@article{Khalil2004PerformanceRU,
  title={Performance recovery under output feedback sampled-data stabilization of a class of nonlinear systems},
  author={Hassan K. Khalil},
  journal={IEEE Transactions on Automatic Control},
  year={2004},
  volume={49},
  pages={2173-2184}
}
This paper studies sampled-data output feedback control of a class of nonlinear systems. It is shown that the performance of a stabilizing continuous-time state feedback controller can be recovered by a sampled-data output feedback controller when the sampling period is sufficiently small. The output feedback controller uses a deadbeat discrete-time observer to estimate the unmeasured states. Two schemes are proposed to overcome large initial transients when the controller is switched on. 
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Multirate Sampled-Data Output Feedback Using High-Gain Observers

Proceedings of the 45th IEEE Conference on Decision and Control • 2006
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