Is it worth to retransmit lost packets in Networked Control Systems?

Blind, Rainer; Allgöwer, Frank

doi:10.1109/cdc.2012.6426881

Cited by 7 publications

(2 citation statements)

References 23 publications

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“…IV. As measurements may be dropped by the scheduler due to bandwidth limitations, each controller uses the following predictive control law proposed in [9].…”

Section: A Control System Modelmentioning

confidence: 99%

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State-dependent priority scheduling for networked control systems

Carabelli¹,

Blind²,

Dürr³

et al. 2017

2017 American Control Conference (ACC)

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Networked control systems (NCS) have attracted considerable attention in recent years. While the stabilizability and optimal control of NCS for a given communication system has already been studied extensively, the design of the communication system for NCS has recently seen an increase in more thorough investigation. In this paper, we address an optimal scheduling problem for a set of NCS sharing a dedicated communication channel, providing performance bounds and asymptotic stability. We derive a suboptimal scheduling policy with dynamic state-based priorities calculated at the sensors, which are then used for stateless priority queuing in the network, making it both scalable and efficient to implement on routers or multi-layer switches. These properties are beneficial towards leveraging existing IP networks for control, which will be a crucial factor for the proliferation of wide-area NCS applications. By allowing for an arbitrary number of concurrent transmissions, we are able to investigate the relationship between available bandwidth, transmission rate, and delay. To demonstrate the feasibility of our approach, we provide a proofof-concept implementation of the priority scheduler using real networking hardware.

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“…IV. As measurements may be dropped by the scheduler due to bandwidth limitations, each controller uses the following predictive control law proposed in [9].…”

Section: A Control System Modelmentioning

confidence: 99%

“…Recently, the (co-)design of the communication system has also received increasing attention. For instance, it has been investigated how the control performance may be improved through modifications at the transport [9], network [10] or data link layer [11]- [17]. In this paper, we concern ourselves with the latter.…”

Section: Introductionmentioning

confidence: 99%