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This paper deals with architecture and algorithm design of networked control systems (NCSs) to cope with network outages. A Networked PID controller and an internal model control based tuning scheme is proposed, using the jitter margin to ensure stability despite dropped packets. For longer periods of disconnection, an outage heuristic is proposed. The control design and outage heuristic need only...
Our technological demands today require extremely challenging control solutions such as real-time applications of Networked Control System (NCS). However, due to communication protocol and shared data bus, NCS always experiences uncertain and unpredictable time delays in both input and output channels. These delays cause asynchronization between controller and plant thereby degrading the performance...
This paper investigates the problem of stabilizing predictive control for networked control systems with state and input constraints. Both sensor-to-controller and controller-to-actuator delays are considered and described by a multirate method. The control scheme is characterized as a constrained finite horizon predictive control optimization problem with a multirate network-induced delays compensation...
In recent years, networked control systems have gained the attention of the control community, since they allow re-using the preexisting infrastructure therefore reducing deployment time and costs. Unfortunately, they also introduce new control challenges due to the nondeterministic network behavior. Predictive and model-based approaches can be used to compensate both delays and packet dropouts. However,...
This paper investigates the problem of model predictive control for networked multirate control systems (NMCSs) with the output sampling period several times larger than the input updating period. Both sensor-to-controller and controller-to-actuator network-induced delays are considered and are assumed to be upperbounded by one output sampling period. Firstly, using a modified multirate model predictive...
Networked control systems (NCS) have gained an increasing attention in recent years due to their flexibility and cost reduction. The two main problems affecting stability and performance of closed-loop NCS are packet delay and drop. The problem of delay is severe in large scale NCS where the sensor-controller-actuator are connected via a network with large number of switches and routers. In this paper,...
This paper is concerned with simultaneous stability of a collection of continuous-time linear plants whose feedback control loops are closed via a shared digital communication network. Because of the limitation of communication capacity, only a limited number of controller-plant connections can be accommodated at any time instant. Therefore, it is necessary to carefully design the scheduling policy...
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