Model Based Networked Control Systems: a Discrete Time Lifting Approach
نویسندگان
چکیده
In this paper, discrete-time Model-Based Networked Control Systems (MB-NCS) are studied. A lifting process is applied to the original MB-NCS configuration resulting in a Linear Time-Invariant (LTI) system. Necessary and sufficient conditions are given for the asymptotic stability of the system with instantaneous feedback in terms of h, the periodic update constant, and in terms of h and τ for the intermittent feedback case, where τ is the time interval in which the loop remains closed. The lifting process is also applied to a more general MB-NCS configuration in which the controller is connected to the actuator and plant by means of the digital communication network resulting in a multirate system; now, the controller is updated every nT time units while the plant is updated every mT time units, similarly, necessary and sufficient conditions for asymptotic stability are given in terms of the parameters n and m.
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