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Reports (Research Report) Year : 2011

FeedNetBack - D03.01 - Control Subject to Transmission Constraints, No Transmission Errors

Abstract

This is a Deliverable Report for the FeedNetBack project (www.feednetback.eu). It describes the research performed within Work Package 3, Task 3.1 (Control Subject to Transmission Constraints, no Transmission Errors), in the first 35 months of the project. It targets the issue of control subject to transmission constraints with no transmission error. This research concerns problems arising from the presence of a communication channel (specified and modeled at the physical layer) within the control loop. The resulting constraints include finite capacities in the transmission of the sensor and/or actuator signals. Our focus is on designing new quantization, compression and coding techniques to support networked control in this scenario. A first contribution of this report is a new adaptive differential coding algorithm for systems controlled through a digital noiseless channel with limited channel rate. The proposed technique results in global stability for noiseless MIMO systems, with a data-rate which is known to be the minimal required (as assessed by information-theoretical limits known in the literature as 'data-rate theorem'). With respect to existing algorithms, our scheme improves the transient behavior. A second line of research for the noiseless scenario has addressed the effect of limited data-rate in an algorithm running over a network. As a representative example, the consensus algorithm has been analyzed, and in particular its randomized version known as gossip algorithm. Static quantizers have been considered at first (both deterministic and probabilistic) and then the dynamic adaptive quantizers have been introduced also in this setting.

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Dates and versions

hal-00785726 , version 1 (06-02-2013)

Identifiers

  • HAL Id : hal-00785726 , version 1

Cite

Alireza Farhadi, Federica Garin, Carlos Canudas de Wit, Sandro Zampieri, Ruggero Carli, et al.. FeedNetBack - D03.01 - Control Subject to Transmission Constraints, No Transmission Errors. [Research Report] 2011. ⟨hal-00785726⟩
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