Distributed fusion filtering for cyber-physical systems under Round-Robin protocol: a mixed H2/H∞ framework

Yuhang Jin, Xiaosen Ma, Xueyang Meng and Yun Chen

International Journal of Systems Science, 2023, vol. 54, issue 8, 1661-1675

Abstract: In this paper, the distributed mixed $ H_{2}/H_{\infty } $ H2/H∞ fusion filter design problem is investigated for a class of cyber-physical systems subject to non-ideal measurements under Round-Robin protocol. To save the limited communication resources, the Round-Robin protocol is employed to schedule the data transmissions from the sensors to the remote filters. The measurement is imperfect by taking into account the noises, the random saturations, nonlinearity perturbations and packet dropouts. The objective of this study is to propose a desired fusion filtering method that ensures the prescribed performance constraints on both the local and fusion filtering error dynamics. With the aid of Lyapunov function and stochastic analysis technique, a sufficient condition is established to guarantee the mixed $ H_2 $ H2/ $ H_{\infty } $ H∞ performance index for the local filtering error systems, and then the filter parameter matrices are derived by resorting to the solutions to some matrix inequalities. Subsequently, on the basis of the obtained local state estimates, the proper fusion parameters are acquired by solving a convex optimisation problem. Finally, a numerical example is provided to demonstrate the effectiveness of the designed fusion filter.

Date: 2023
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DOI: 10.1080/00207721.2023.2208130

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