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RISS 인기검색어
- 검색키워드
- 저자 : Norimasa Kamiji (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Modeling of Driver Steering Behavior in Lateral Wind toward Driver Assistance System
Yoshinori Kurata,Norimasa Kamiji,Takahiro Wada,Shun’ichi Doi 한국자동차공학회 2008 한국자동차공학회 Symposium Vol.2008 No.9
Disturbances decrease vehicle stability and increase driver’s mental and physical workload. Especially, lateral wind increases driver’s workload greatly, because driver cannot expect it. Various driver assistance systems by steering assist have been developed to improve vehicle stability in such disturbance. Gap between vehicle motion and driver’s motion recognition characteristics, however, often leads to uncomfortable feeling in driver assistance system with steering assist. Thus, this study aims to develop more comfortable driver assistance system in lateral wind disturbance by studying relationship between driver’s motion recognition characteristics and driving behavior against disturbance. First, the driver’s posture change, the head movement and the corrective steering behavior were measured under various lateral wind conditions utilizing a driving simulator with one dof motion in lateral direction. As the results, strong correlation was found between driver’s head lateral jerk by lateral disturbance and angular acceleration of steering wheel. Then, we build a driver’s steering model against lateral disturbance based on the experimental results. Finally, validity of the proposed model is shown by comparing the steering angle of experimental results and that of simulation results.
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Analysis of Head Tilt Strategy of Car Drivers
Satoru Fujisawa,Takahiro Wada,Norimasa Kamiji,Shun"ichi Doi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Car drivers receive the acceleration stimulation and the rotational stimulation when negotiating with a curve.In such a situation, the driver controls his/her posture such as the head and the body appropriately. It is known that the driver tilts his/her head to the direction of the curve turns. In this research, the driver’s head tilt strategy in roll direction is investigated for understanding of comfortable vehicle motion. From the experimental results with a real car, high correlation is found between vehicle lateral acceleration and the driver’s head roll angle. In addition, relationship between the vehicle roll angle and the driver"s head movement is investigated in the experiment with a driving simulatorwith 1 dof motion in the roll axis. It is found that the driver adjusts his head based on the roll of the car.
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Analysis of Driver's Head Movement by Motion Sickness Model
Hiroyuki Konno,Satoru Fujisawa,Katsuya Imaizumi,Takahiro Wada,Norimasa Kamiji,Shun’ichi Doi 대한인간공학회 2010 대한인간공학회 학술대회논문집 Vol.2010 No.5
Driver receives the acceleration and the rotational stimulations when negotiating with a curve. In such a situation, the driver controls his/her posture such as the head and the body appropriately. Beside, it is pointed out that the head movement of the passenger is opposite to the driver. Moreover, by the fact that the driver does not get carsickness comparing with the passenger, it is suggested that the driver's head movement may be related to the decrease of carsickness and improvement of the ride comfort. Therefore, we build the mathematical model of the motion sickness and investigated the relationship between the head movement and the motion sickness incidence. In addition, we simulate motion sickness incidence using driver’s head movements measured in the experiments with a real car. From the result, it is shown that the head tilt movement of the drivers has an effect to decrease the motion sickness.
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