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Estimation in uncertain switched systems using a bank of interval observers: local vs glocal approach

Abstract : This paper discusses some issues related with the design of a bank of interval observers for uncertain switched systems, in which several sources of uncertainty are considered: parametric uncertainties , unknown disturbances, measurement noise, and unknown switching signal. More specifically, this paper focuses on analyzing the interval estimation accuracy when changes of active mode induce non-positivity of the interval state estimation errors. In particular, it is shown that by combining two types of interval observers, referred to as local and global, the accuracy and reliability of the estimation can be improved. The properties of the obtained so-called glocal observer are investigated and illustrated by means of numerical simulations.
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https://hal.inria.fr/hal-02634537
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Submitted on : Wednesday, May 27, 2020 - 3:39:48 PM
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Damiano Rotondo, Denis Efimov, Andrea Cristofaro, Tor Arne Johansen. Estimation in uncertain switched systems using a bank of interval observers: local vs glocal approach. IFAC 2020 - 21rst IFAC World Congress, Jul 2020, Berlin, Germany. ⟨hal-02634537⟩

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