2025 |
Sunghyun Koo / Jin Gyu Lee / Hyungbo Shim A Distributed Observer Accommodating a Broad Range of Intermittent Communication Scenarios Journal Article In: IEEE Control Systems Letters, vol. 9, pp. 1682-1687, 2025, ISSN: 2475-1456. Abstract | Links | BibTeX | Tags: distributed observer, Distributed state estimation, Multi-agent systems @article{nokey,This paper proposes a distributed observer that utilizes intermittent communication and accommodates a broad range of scenarios, including asynchronous operation, unidirectional communication, packet loss, and communication delays. An analysis over jointly connected switching topology supports this and provides a condition for exponential convergence of the estimation error. This condition can be used to determine a communication rate. The analysis is valid when the unobservable subspace of each agent admits an invariant orthogonal complement. This is a property that is always achievable via a coordinate transformation when the system matrix is diagonalizable over the complex field |
2023 |
Donggil Lee / Junsoo Kim / Hyungbo Shim Distributed Resilient Observer: Blended Dynamics Theory Meets L1-Minimization Approach Proceedings Article In: 2023 62nd IEEE Conference on Decision and Control (CDC), IEEE IEEE Control Systems Society, Marina Bay Sands, Singapore, 2023. Abstract | Links | BibTeX | Tags: distributed control, distributed observer, Networked control system @inproceedings{nokey,This letter presents a distributed resilient observer for continuous-time linear time-invariant plants that remains functional even under sensor attacks. The proposed method aims to determine the estimation outcome that matches the majority of sensor measurements, which is formulated as an ℓ1 -minimization problem considering all the observable components of each sensor measurement. A distributed observer based on the blended dynamics theory is then proposed to solve the ℓ1 -minimization problem in a distributed manner. As a result, the distributed resilient estimation is enabled for a broader class of systems compared to previous works. The design procedure is constructive with parameters obtained from a specified condition that is equivalent to the well-known null-space property. |
List of English Publication
2025 |
A Distributed Observer Accommodating a Broad Range of Intermittent Communication Scenarios Journal Article In: IEEE Control Systems Letters, vol. 9, pp. 1682-1687, 2025, ISSN: 2475-1456. |
2023 |
Distributed Resilient Observer: Blended Dynamics Theory Meets L1-Minimization Approach Proceedings Article In: 2023 62nd IEEE Conference on Decision and Control (CDC), IEEE IEEE Control Systems Society, Marina Bay Sands, Singapore, 2023. |