Vehicular platoons in cyclic interconnections

Stüdli, Sonja; Seron, Maria M.; Middleton, Richard H.

Title: Vehicular platoons in cyclic interconnections
Creator: Stüdli, Sonja; Seron, Maria M.; Middleton, Richard H.
Relation: ARC.DP150101325 http://purl.org/au-research/grants/arc/DP150101325
Relation: Automatica Vol. 94, p. 283-293
Publisher Link: http://dx.doi.org/10.1016/j.automatica.2018.04.033
Publisher: Elsevier
Resource Type: journal article
Date: 2018
Description: Vehicle platooning has received considerable attention as a means to achieve more efficient transportation networks and vehicle autonomy. It is well known that certain systems experience undesired behaviours (instability and string instability) when the length of the platoon grows. In this context, we study homogeneous platoons of vehicles with linear dynamic models, having bi-directional communication and maintaining a constant (velocity independent) target inter vehicle spacing. We investigate both stability and string instability if the string length increases, where the vehicles utilise weighted information from multiple vehicles ahead and behind. We find conditions for the weighting factors and the linear systems that are necessary for stability of long platoons. We then show that by selecting a communication range that increases linearly with the platoon size, it is possible to achieve string stability in some cases. Further, we show that careful selection of the weighting factors can reduce the disturbance amplification considerably.
Subject: string stability; circulant system; control systems; linear control; stability analysis
Identifier: http://hdl.handle.net/1959.13/1444280
Identifier: uon:42255
Identifier: ISSN:0005-1098
Language: eng
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