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Recent Work and Publications

Delay attacks on feedback systems is a subject that has not been widely studied. The following papers have a look on the servo and regulator problems in such situations and proposes recursive output error identification of the dynamics and delay for detection of delay changes indicative of an attack:

- T. Wigren and A. Teixeira, "On-line identification of delay attacks in networked servo control", Proc. IFAC World Congress, pp. 1041-1047, Yokohama, Japan, July 9-14, 2023.

- T. Wigren and A. Teixeira, "Feedback path delay attacks and detection", Proc. IEEE CDC, pp. 3864-3871, Singapore, December 13-15, 2023.

- T. Wigren and A. Teixeira, "Delay attack and detection in feedback linearized control systems", submitted to ECC, Stockholm, Sweden, June 25-28, 2024.

- T. Wigren, "Convergence in delayed recursive identification of nonlinear systems", submitted to ECC, Stockholm, Sweden, June 25-28, 2024.

A new algorithm for recursive identification of a nonlinear continuous time state space ODE model with unknown nonlinear measurement equation is described in the open access publication:

- T. Wigren, "Recursive identification of a nonlinear state space model", Int. J. Adaptive Contr. Signal Processing, vol. 37, no. 2, pp. 447-473, 2023.

The software package that implements the algorithm is available for free downlad at http://www.it.uu.se/katalog/tw/software , including a user manual in the report:

- T. Wigren, "MATLAB software for recursive identification and scaling using a structured nonlinear black-box model – revision 7", Technical Reports from the Department of Information Technology, 2021-008, Uppsala University, Uppsala, Sweden, December, 2021.

Uppdaterad  2024-01-01 13:55:53 av Torbjörn Wigren.