Assessment of optimal passive suspensions regarding motion sickness mitigation in different road profiles and sitting conditions

George Papaioannou, Jenny Jerrelind, Lars Drugge, Barys Shyrokau

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Automated vehicles (AVs) are expected to lead the evolution of mobility. Motion sickness, known as car sickness, is one of the main issues AVs will face, and could jeopardise their wide impact. However, a limited work has been done on how the optimisation of suspension dynamics could contribute. In this direction, this paper explores the mitigation of car sickness and the improvement of ride comfort through the optimisation of passive suspension systems. More specifically, a half car model, which represents a passenger vehicle from IPG/CarMaker, is used to optimise front suspension system for minimising comfort, but also maintaining vehicle handling while the vehicle is driving over two different road classes. The evaluation of comfort is conducted using the common standardised metric suggested by ISO-2631. After having obtained the optimum design solutions, the optimal solutions are simulated using IPG/CarMaker by assigning the road profiles on a 23 km long countryside road path. Then, vehicle accelerations are transferred to the occupant's head using appropriate models from the literature for both back-on and back-off sitting conditions. Afterwards, car sickness and ride comfort are further assessed to explore in detail how the tuning of the suspension systems through optimisation has minimised the first and enhanced the latter. For the assessment of car sickness, a three dimensional detailed biomechanical human model is used. The results imply that the pitch velocity seems more suitable, as a cost function for optimising the suspension systems with regards to motion sickness mitigation. Therefore, it should be considered either on its own or in combination with metric suggested by ISO-2631.
Original languageEnglish
Title of host publicationProceedings of the 2021 IEEE International Intelligent Transportation Systems Conference (ITSC)
PublisherIEEE
Pages3896-3902
ISBN (Electronic)978-1-7281-9142-3
ISBN (Print)978-1-7281-9143-0
DOIs
Publication statusPublished - 2021
EventITSC 2021: 24th IEEE International Intelligent Transportation Systems Conference - Virtual at Indianapolis, United States
Duration: 19 Sep 202122 Sep 2021
Conference number: 24th

Conference

ConferenceITSC 2021
CountryUnited States
CityVirtual at Indianapolis
Period19/09/2122/09/21

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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