TY - GEN

T1 - Secure State Estimation under Measurement Attacks using Virtual State in Distributed Observer System

AU - Sato, Shotaro

AU - Namerikawa, Toru

PY - 2019/6

Y1 - 2019/6

N2 - In this paper, a distributed secure state estimation problem that is state estimation in distributed observer system in the presence of attacks is mainly discussed. We introduce the notion of graph-based distributed observer representation, virtual state, and a subgroup to derive a condition for the secure state estimation. By the graph-based distributed observer representation, we can consider the system's observability and communication pass connectivity as graph connectivity at once. With the notion of virtual state and the subgroup, we derive the state estimation condition which is the inequality relationship between the number of the allowable attacked observer and the graph connectivity as a theorem. Finally, a simple numerical example verifies the theorem.

AB - In this paper, a distributed secure state estimation problem that is state estimation in distributed observer system in the presence of attacks is mainly discussed. We introduce the notion of graph-based distributed observer representation, virtual state, and a subgroup to derive a condition for the secure state estimation. By the graph-based distributed observer representation, we can consider the system's observability and communication pass connectivity as graph connectivity at once. With the notion of virtual state and the subgroup, we derive the state estimation condition which is the inequality relationship between the number of the allowable attacked observer and the graph connectivity as a theorem. Finally, a simple numerical example verifies the theorem.

UR - http://www.scopus.com/inward/record.url?scp=85069906210&partnerID=8YFLogxK

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M3 - Conference contribution

AN - SCOPUS:85069906210

T3 - 2019 12th Asian Control Conference, ASCC 2019

SP - 1683

EP - 1688

BT - 2019 12th Asian Control Conference, ASCC 2019

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 12th Asian Control Conference, ASCC 2019

Y2 - 9 June 2019 through 12 June 2019

ER -