Supervisory Nonlinear State Observers for Adversarial Sparse Attacks

Enhanced distributed state estimation with resilience to multiple disturbances and false data injection attacks

“…In this article, we consider the problem of attack resilience against attacks that are bounded, and have no knowledge of the system model. Conversely, some attacks could be modeled as Byzantine adversaries, where the system dynamic is known to the attacks, 38 or unbounded sparse attacks, where the signal is unbounded and channels subject to attacks are unknown 39 . The identification and rejection of these attacks in the presence of multiple disturbances is an interesting topic worthy of future research.…”

“…It is noted that some works do not prescribe the attack signals to follow any particular structure or to be bounded. Examples include Byzantine attacks 38 and unbounded sparse attacks 39 . However, for the Byzantine model, the attacker is assumed to possess knowledge of the graph topology and the system dynamics, which is not required in our model.…”

Observer Design for Cyber-Physical Systems With State Delay and Sparse Sensor Attacks

“…CPSs have high requirements on security, reliability and real-time performance, which makes this kind of systems face great challenges in practical application. The research on CPSs has been a hot topic in the field of control, such as construction of dynamic system model [6], stability analysis [7], [8], fault detection and diagnosis [9], [10], attack detection and identification [11], [12], secure state estimation [13]- [17] and security control [18]- [21]. Among them, the research on the security of CPSs has set off a great upsurge.…”