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Objective evaluation method of steering comfort based on movement quality evaluation of driver steering maneuver
Chinese Journal of Mechanical Engineering volume 27, pages 1027–1037 (2014)
Abstract
The existing research of steering comfort mainly focuses on the subjective evaluation, aiming at designing and optimizing the steering system. In the development of steering system, especially the evaluation of steering comfort, the objective evaluation methods considered the kinematic characteristics of driver steering maneuver are not proposed, which means that the objective evaluation of steering cannot be conducted with the evaluation of kinematic characteristics of driver in steering maneuver. In order to propose the objective evaluation methods of steering comfort, the evaluation of steering movement quality of driver is developed on the basis of the study of the kinematic characteristics of steering maneuver. First, the steering motion trajectories of the driver in both comfortable and certain extreme uncomfortable operation conditions are detected using the Vicon motion capture system. The operation conditions are under the restrictions of the vertical height and horizontal distance between steering wheel center and the H-point of driver, and the steering resisting torque else. Next, the movement quality evaluation of driver steering maneuver is assessed using twelve kinds of evaluation indices based on the kinematic analyses of the steering motion trajectories to propose an objective evaluation method. Finally, an integrated discomfort index of steering maneuver is proposed on the basis of the regression analysis of subjective evaluation rating and the movement quality evaluation indices, including the Jerk, Discomfort and Joint Torque indices. The test results show that the proposed integrated discomfort index gives a good fitting with the subjective evaluation of discomfort, which means it can be used to evaluate or predict the discomfort level of steering maneuver. This paper proposes an objective evaluation method of steering comfort based on the movement quality evaluation of driver steering maneuver.
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Supported by National Natural Science Foundation of China (Grant Nos. 51005133, 51375009), National Hi-tech Research and Development Program of China (863 Program, Grant No. 2011AA11A244)
YANG Yiyong, born in 1966, is currently a professor at School of Engineering and Technology, China University of Geosciences (Beijing), China. He received his bachelor and master degree from Hefei University of Technology, China, in 1993. And he received his PhD degree from Tsinghua University, China, in 2004. His research interests include mechanical system dynamics, mechanical design and theory, and human-machine system.
LIU Yahui, born in 1980, is currently an assistant professor at State Key Laboratory of Automotive Safety and Energy, Tsinghua University, China. He received his bachelor degree from Jilin University, China, in 2003 and PhD degree from Beihang University, China, in 2009, respectively. His research interests include vehicle system dynamics, steering system and driver-vehicle system.
WANG Man, born in 1988, is currently a graduate student at China University of Geosciences (Beijing), China. Her research interests include steering system and driver-vehicle system.
JI Run, born in 1985, is currently a research assistant at Human Biomechanics Laboratory, National Research Center for Rehabilitation Technical Aids, China. He received his bachelor degree from Capital Medical University, China, in 2004. His research interests include biomechanics of human body and rehabilitation engineering.
JI Xuewu, born in 1964, is currently an associate professor at Tsinghua University, China. He received his PhD degree in automotive engineering from Jilin University, China, in 1994. His research interests include vehicle system dynamics, steering system and driver-vehicle system.
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Yang, Y., Liu, Y., Wang, M. et al. Objective evaluation method of steering comfort based on movement quality evaluation of driver steering maneuver. Chin. J. Mech. Eng. 27, 1027–1037 (2014). https://doi.org/10.3901/CJME.2014.0724.126
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DOI: https://doi.org/10.3901/CJME.2014.0724.126