Journal
AUTOMATICA
Volume 62, Issue -, Pages 106-113Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.automatica.2015.09.018
Keywords
Nonlinear systems; Sampled-data; Continuous-discrete time observers; High gain observer; Updated sampling-time; Self-triggered observer
Funding
- PEPS SOSSYAL
- ANR LIMICOS [12 BS03 005 01]
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This paper deals with the design of high gain observers for a class of continuous-time dynamical systems with discrete-time measurements. Different approaches based on high gain techniques have been followed in the literature to tackle this problem. Contrary to these works, the measurement sampling time is considered to be variable. Moreover, the new idea of the proposed work is that the use of the output measurements by the observer follows an event based on an extended observer state component. Assuming that the vector fields related to the considered system are globally Lipschitz, the asymptotic convergence of the observation error is established. As an application of this approach, a state estimation problem of an academic bioprocess is studied, and its simulation results are discussed. (C) 2015 Elsevier Ltd. All rights reserved.
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