On the estimation of signal attacks: A dual rate sd control framework

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We consider the problem of estimating signal attacks injected into the actuators or sensors of control systems, assuming the attack is detectable, i.e., it can be seen at the output. We show that there exists a trade-off between attack rejection and control, and that the estimator design depends on the controller used. We use dual rate sampling to enhance detectability of the attacks and we provide different methods to design the estimator. The first method is by solving a model matching problem subject to causality constraints. The second method exploits dual rate sampling to accurately reconstruct the unknown input. The third method is using a dual rate unknown input observer. We provide conditions on the existence of these estimators, and show that dual rate unknown input observers always exist if the multirate system does not have a zero at 1.

Original languageEnglish (US)
Title of host publication2019 18th European Control Conference, ECC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4380-4385
Number of pages6
ISBN (Electronic)9783907144008
DOIs
StatePublished - Jun 2019
Event18th European Control Conference, ECC 2019 - Naples, Italy
Duration: Jun 25 2019Jun 28 2019

Publication series

Name2019 18th European Control Conference, ECC 2019

Conference

Conference18th European Control Conference, ECC 2019
CountryItaly
CityNaples
Period6/25/196/28/19

ASJC Scopus subject areas

  • Instrumentation
  • Control and Optimization

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    Hirzallah, N. H., Voulgaris, P. G., & Hovakimyan, N. (2019). On the estimation of signal attacks: A dual rate sd control framework. In 2019 18th European Control Conference, ECC 2019 (pp. 4380-4385). [8796181] (2019 18th European Control Conference, ECC 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/ECC.2019.8796181