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On Redundant Observability: From Security Index to Attack Detection and Resilient State Estimation
- On Redundant Observability: From Security Index to Attack Detection and Resilient State Estimation
- Lee, Chanhwa; Shim, Hyungbo; Eun, Yongsoon
- DGIST Authors
- Eun, Yongsoon
- Issue Date
- IEEE Transactions on Automatic Control, 64(2), 775-782
- Article Type
- The security of control systems under sensor attacks is investigated. Redundant observability is introduced, explaining existing security notions including the security index, attack detectability, and observability under attacks. Equivalent conditions between redundant observability and existing notions are presented. Based on a bank of partial observers utilizing Kalman decomposition and a decoder exploiting redundancy, an estimator design algorithm is proposed enhancing the resilience of control systems. This scheme substantially improves computational efficiency utilizing far less memory. © 1963-2012 IEEE.
- Institute of Electrical and Electronics Engineers
- Related Researcher
DSC Lab(Dynamic Systems and Control Laboratory)
Resilient control systems; Control systems with nonlinear sensors and actuators; Quasi-linear control systems; Intelligent transportation systems; Networked control systems
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- Department of Information and Communication EngineeringDSC Lab(Dynamic Systems and Control Laboratory)1. Journal Articles
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