Driving Simulator Experiment on Ride Comfort Improvement and Low Back Pain Prevention of Autonomous Car Occupants
Unlike other autonomous working vehicles such as farm and construction machinery, autonomous cars have at least an occupant, even if the driving operations are automated. Thus, the whole-body vibration problem continues to be a research topic with respect
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Abstract Unlike other autonomous working vehicles such as farm and construction machinery, autonomous cars have at least an occupant, even if the driving operations are automated. Thus, the whole-body vibration problem continues to be a research topic with respect to autonomous vehicles. Several technologies have been developed to decrease whole-body vibration exposure. Most of technologies have focused on the development and improvement of automotive components such as the suspension system, automotive seats and tires. This paper examines the reduction in whole-body vibrations using autonomous functions such as lane-change control. In this paper, a subject experiment with a driving simulator is reported so as to discuss the influence of decreasing the whole-body vibration exposure on ride comfort improvement and low back pain prevention. Keywords Whole-body vibration change Pothole
ISO 2631-1 Autonomous vehicle Lane
1 Introduction Many technologies have been developed to decrease whole-body vibration exposure during automobile movements. Research on suspension control can be considered a representative example of improving whole-body vibration exposures. Conventional suspension systems use passive springs and dampers to control spring
J. Tatsuno (&) Faculty of Engineering, Kindai University, 1 Takaya-Umenobe, Higashi-Hiroshima City, Hiroshima 739-2116, Japan e-mail: [email protected] S. Maeda Faculty of Applied Sociology, Kindai University, 3-4-1 Kowakae, Higashi-Osaka City, Osaka 577-8502, Japan © Springer International Publishing Switzerland 2017 N.A. Stanton et al. (eds.), Advances in Human Aspects of Transportation, Advances in Intelligent Systems and Computing 484, DOI 10.1007/978-3-319-41682-3_43
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motion and absorb impact. The spring and damper coefficients are fixed to satisfy the concept of each automobile model. However, the performance of conventional suspensions has a definite limit. Therefore, automotive companies have developed active suspensions [1–3]. In fact, some models on which active suspensions were installed were commercialized by automotive companies. Currently, only a few active suspensions models exist because of high costs. Nevertheless, there is continued research on active suspension system. Most active suspension research is focused on construction and improving the control method [4–6]. In contrast, the psychological effects of active suspension on vehicle occupants were not considered. Similarly, many studies report on the impact of seat design in improving whole-body vibration exposure. To date, automotive seats were mainly evaluated using the SEAT value, which is defined in ISO 10326-1:1992 [7]. The SEAT value is the transmissibility; it is calculated from the acceleration on the seat and the acceleration at the base of the seat. Because the SEAT value is derived from data obtained in laboratory experiments, several problems have been pointed out. For example, Yu and Khameneh [8] reported that subjects were unable to distinguish be
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