Journal
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
Volume 63, Issue 12, Pages 4353-4360Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAC.2018.2819686
Keywords
Fault tolerance; Luenberger observer; robust control; secure state estimation; sparse sensor integrity attacks
Funding
- National Science Foundation
- Air Force Office of Scientific Research
- Singapore Ministry of Education Academic Research Fund Tier 1 [M4011866]
Ask authors/readers for more resources
This paper considers the secure state estimation problem for noisy systems in the presence of sparse sensor integrity attacks. We show a fundamental limitation, that is, 2 rho-detectability is necessary for achieving bounded estimation errors, where rho is the number of attacks. This condition is weaker than the 2 rho-observability condition typically assumed in the literature. Conversely, we propose a real-time state estimator that achieves the fundamental limitation. The proposed state estimator is inspired by robust control and fault detection and isolation, that is. it consists of local Luenberger estimators, local residual detectors, and a global fusion process. We show its performance guarantees for H-2, H-infinity, and l(1) . and t systems. Finally, numerical examples show that it has relatively low estimation errors among existing algorithms and average computation time for systems with a sufficiently small number of compromised sensors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available