Wireless networks can suffer from packet drop/loss that can cause instability of the NCS. Re-transmission will generate obsolete packets and it will simply produce more traffic in the
network. As NCS carries real-time traffic; it might be beneficial to drop a packet that can not be transmitted immediately. The tolerable packet drop rate must be analyzed to maintain guaranteed desired system stability [15]. NCS with packet drop can be modeled as two-state switch θ, where θ ∈ {0,1} is called receiving sequence that indicates reception (θ = 1) or loss (θ = 0). If the current state of the plant is missing because of the packet drop, the previous state buffered at the controller is used. Therefore, the dynamical model can be expressed by (3). Modern NCS can tolerate packet drop up to some extent and can still maintain stability [4], [15], [35].
Wireless networks can suffer from packet drop/loss that can cause instability of the NCS. Re-transmission will generate obsolete packets and it will simply produce more traffic in the
network. As NCS carries real-time traffic; it might be beneficial to drop a packet that can not be transmitted immediately. The tolerable packet drop rate must be analyzed to maintain guaranteed desired system stability [15]. NCS with packet drop can be modeled as two-state switch θ, where θ ∈ {0,1} is called receiving sequence that indicates reception (θ = 1) or loss (θ = 0). If the current state of the plant is missing because of the packet drop, the previous state buffered at the controller is used. Therefore, the dynamical model can be expressed by (3). Modern NCS can tolerate packet drop up to some extent and can still maintain stability [4], [15], [35].
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