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From Continuous-Time Design to Sampled-Data Design of Observers

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2 Author(s)
Karafyllis, I. ; Dept. of Environ. Eng., Tech. Univ. of Crete, Chania, Greece ; Kravaris, C.

In this work, a sampled-data nonlinear observer is designed using a continuous-time design coupled with an inter-sample output predictor. The proposed sampled-data observer is a hybrid system. It is shown that under certain conditions, the robustness properties of the continuous-time design are inherited by the sampled-data design, as long as the sampling period is not too large. The approach is applied to linear systems and to triangular globally Lipschitz systems.

Published in:

Automatic Control, IEEE Transactions on  (Volume:54 ,  Issue: 9 )