Development of fatigue reduction technology based on mind and body characteristics when senior citizen drives LSV

在21世纪，“社区汽车”作为一种旨在增加日常生活的舒适度和便利性的交通工具，一直受到人们的关注。此外，最近主要针对老年人的“银色汽车”的普及也引人注目。预计小型电动汽车的需求将逐年增加，并有望开发附加值越来越高的产品。本研究的目的是检验主动座椅悬架应用于小型汽车时的有效性以及与实际使用相关的问题。为单座电动汽车设计制造了一种易于安装的小型主动座椅悬架。在实际驾驶试验中，制备了用硬质橡胶模拟实际路面凹凸度的试验路面，考察了驾驶过程中座椅表面垂直振动的基本控制性能。然而，电动汽车行驶平顺性的评价一直依赖于驾驶员的主观判断。因此，有必要根据物理值（即振动）来评价主观判断与客观判断的相关性。通过“配对比较法”主观评价的乘坐舒适性评分与测量的座椅表面加速度进行比较。结果表明，主观判断与物理值之间具有良好的相关性。

The "community car" has been attracting attention as a transportation vehicle aimed at increasing the comfort of and convenience of daily life in the 21^<st> century. In addition, the spread of "silver vehicles," marketed mainly for elderly people, has been notable recently. It is expected that the demand for small electric automobiles will increase yearly, and the development of increasingly value-added products is expected.The purpose of this study is to examine the effectiveness of active seat suspension when it is applied to small cars and the problems associated with its practical use. A small active seat suspension, which is easy to install, was designed and manufactured for one-seater electric automobiles. In an actual driving test, a test road in which the concavity and convexity of an actual road surface were simulated using hard rubber was prepared and the basic control performance of vertical vibrations of the seat surface during driving was examined.However, the evaluation of ride comfort during the electric vehicle running has depended on subjective judgement by drivers. Thus, it is necessary to evaluate the correlation of subjective judgement with objective judgement according to physical values, i.e., vibrations. Ride comfort ratings evaluated subjectively by the "Paired Comparison Method" were compared with the measured acceleration of the seat surface. As a result, a good correlation between the subjective judgement and the physical values was verified.