Optimal \(\mathcal H_{\infty}\) filtering in networked control systems with multiple packet dropouts. (English) Zbl 1153.93034

Summary: This paper studies the problem of \(\mathcal H_{\infty}\) filtering in Networked Control Systems (NCSs) with multiple packet dropouts. A new formulation enables us to assign separate dropout rates from the sensors to the controller and from the controller to the actuators. By employing the new formulation, random dropout rates are transformed into stochastic parameters in the system’s representation. A generalized \(\mathcal H_{\infty}\)-norm for systems with stochastic parameters and both stochastic and deterministic inputs is derived. The stochastic \(\mathcal H_{\infty}\)-norm of the filtering error is used as a criterion for filter design in the NCS framework. A set of linear matrix inequalities is given to solve the corresponding filter design problem. A simulation example supports the theory.


93E11 Filtering in stochastic control theory
93C55 Discrete-time control/observation systems
93C05 Linear systems in control theory
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