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Traffic flow optimization with QoS constrained network admission control

Alfréd Csikós ; Hamed Farhadi (Institutionen för signaler och system, Reglerteknik) ; Balazs Kulcsar (Institutionen för signaler och system, Reglerteknik) ; Themistoklis Charalambous (Institutionen för signaler och system, Kommunikationssystem) ; Henk Wymeersch (Institutionen för signaler och system, Kommunikationssystem)
IFAC-PapersOnLine (24058963). Vol. 50 (2017), 1, p. 5275-5280.
[Artikel, refereegranskad vetenskaplig]

The paper proposes a control design method in order to gate input flow to a protected urban vehicular network such that travel time Quality of Service (QoS) constraints are preserved within the network. In view of the network to be protected (also called the region), two types of queues are distinguished: external and internal. While external queues represent vehicles waiting to enter the protected network, an internal queue can be used to describe the network's aggregated behaviour. By controlling the number of vehicles entering the internal queue, the travel time within the network subject to the vehicular conservation law and the Network Fundamental Diagram (NFD) can be subsequently controlled. The admission controller can thus be interpreted as a mechanism which transforms the unknown arrival process governing the number of vehicles entering the network to a regulated process, such that prescribed QoS requirements on travel time in the network and upper bound on the external queue are satisfied. The admission control problem is formulated as a constrained convex optimization problem and a Model Predictive Control (MPC) problem. A case study demonstrates the benefits of the admission control mechanisms proposed.

Nyckelord: admission; network fundamental diagram; perimeter control; Quality of Service; Traffic control; traffic flow; travel time



Denna post skapades 2017-12-27.
CPL Pubid: 254085

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Reglerteknik (2005-2017)
Institutionen för signaler och system, Kommunikationssystem (1900-2017)

Ämnesområden

Elektroteknik och elektronik

Chalmers infrastruktur