Simultaneous Input and State Set-Valued Observers with Applications to Attack-Resilient Estimation

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

1 Scopus citations

Abstract

In this paper, we present a fixed-order set-valued observer for linear discrete-time bounded-error systems that simultaneously finds bounded sets of compatible states and unknown inputs that are optimal in the minimum H∞-norm sense, i.e., with minimum average power amplification. We also analyze the necessary and sufficient conditions for the stability of the observer and its connection to a system property known as strong detectability. Next, we show that the proposed set-valued observer can be used for attack-resilient estimation of state and attack signals when cyber-physical systems are subject to false data injection attacks on both actuator and sensor signals. Moreover, we discuss the implication of strong detectability on resilient state estimation and attack identification. Finally, the effectiveness of our set-valued observer is demonstrated in simulation, including on an IEEE 14-bus electric power system.

Original languageEnglish (US)
Title of host publication2018 Annual American Control Conference, ACC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5167-5174
Number of pages8
Volume2018-June
ISBN (Print)9781538654286
DOIs
StatePublished - Aug 9 2018
Event2018 Annual American Control Conference, ACC 2018 - Milwauke, United States
Duration: Jun 27 2018Jun 29 2018

Other

Other2018 Annual American Control Conference, ACC 2018
CountryUnited States
CityMilwauke
Period6/27/186/29/18

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Yong, S. (2018). Simultaneous Input and State Set-Valued Observers with Applications to Attack-Resilient Estimation. In 2018 Annual American Control Conference, ACC 2018 (Vol. 2018-June, pp. 5167-5174). [8431052] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/ACC.2018.8431052