Optimal control of motorsport differentials

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dc.contributor.authorTremlett, Anthony J.
dc.contributor.authorMassaro, Matteo
dc.contributor.authorPurdy, David J.
dc.contributor.authorVelenis, Efstathios
dc.contributor.authorFrancis, Assadian
dc.contributor.authorMoore, Adrian P.
dc.contributor.authorHalley, Martin A.
dc.date.accessioned2016-03-21T15:52:49Z
dc.date.available2016-03-21T15:52:49Z
dc.date.issued2015-10-15
dc.description.abstractModern motorsport limited slip differentials (LSD) have evolved to become highly adjustable, allowing the torque bias that they generate to be tuned in the corner entry, apex and corner exit phases of typical on-track manoeuvres. The task of finding the optimal torque bias profile under such varied vehicle conditions is complex. This paper presents a nonlinear optimal control method which is used to find the minimum time optimal torque bias profile through a lane change manoeuvre. The results are compared to traditional open and fully locked differential strategies, in addition to considering related vehicle stability and agility metrics. An investigation into how the optimal torque bias profile changes with reduced track-tyre friction is also included in the analysis. The optimal LSD profile was shown to give a performance gain over its locked differential counterpart in key areas of the manoeuvre where a quick direction change is required. The methodology proposed can be used to find both optimal passive LSD characteristics and as the basis of a semi-active LSD control algorithm.en_UK
dc.identifier.citationTremlett AJ, Massaro M, Purdy DJ, et al., (2015) Optimal control of motorsport differentials. Vehicle System Dynamics, Volume 53, Issue 12, October 2015, pp. 1772-1794en_UK
dc.identifier.issn0042-3114
dc.identifier.urihttps://doi.org/10.1080/00423114.2015.1093150
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/9802
dc.language.isoenen_UK
dc.publisherTaylor and Francisen_UK
dc.rightsAttribution CC BY International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectrace caren_UK
dc.subjectlimited slip differentialen_UK
dc.subjectoptimal controlen_UK
dc.subjectminimum timeen_UK
dc.titleOptimal control of motorsport differentialsen_UK
dc.typeArticleen_UK

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