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排序方式: 共有175条查询结果,搜索用时 15 毫秒
101.
102.
Role of steering wheel feedback on driver performance: driving simulator and modeling analysis 总被引:1,自引:0,他引:1
D. Toffin G. Reymond A. Kemeny J. Droulez 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2007,45(4):375-388
When driving in curves, how do drivers use the force appearing on the steering wheel? As it carries information related to lateral acceleration, this force could be necessary for drivers to tune their internal model of vehicle dynamics; alternatively, being opposed to the drivers' efforts, it could just help them stabilize the steering wheel position. To assess these two hypotheses, we designed an experiment on a motion-based driving simulator. The steering characteristics of the vehicle were modified in the course of driving, unknown to drivers. Results obtained with standard drivers showed a surprisingly wide range of adaptation, except for exaggerated modifications of the steering force feedback. A two-level driver model, combining a preview of vehicle dynamics and a neuromuscular steering control, reproduces these experimental results qualitatively and indicates that adaptation occurs at the haptic level rather than in the internal model of vehicle dynamics. This effect is related to other theories on the manual control of dynamics systems, wherein force feedback characteristics are abstracted at the position control level. This research also illustrates the use of driving simulation for the study of driver behavior and future intelligent steering assistance systems. 相似文献
103.
The perspectives of research for enhancing active safety based on advanced control technology 总被引:1,自引:0,他引:1
《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2007,45(5):413-431
This paper considers the scope and the methodologies for enhancing active safety of road vehicles by sensing and control technologies. The first part of this paper introduces statistical data of traffic accidents in Japan, and describes the development of the drive recorder for accident/incident survey and analysis. Based on vehicle dynamics data, the algorithm of the drive recorder for capturing near-miss incident data is introduced. The second part of this paper reviews control problems of vehicle dynamics on micro-scale electric vehicles for enhancing vehicle dynamics and driving assistance function. In particular, the direct yaw moment control using in-wheel-motors and the active front steering control algorithm are described. The third part of the paper introduces the advanced driver assistance system adapted to driver characteristics and traffic situations. This part mainly describes an adaptive system, which adjusts the assisting manoeuvre depending on individual driver behaviour and situation, and some experimental investigations using the active interface vehicle and driving simulator. Finally, some perspectives and new challenges for future research on vehicle control technology are mentioned. 相似文献
104.
驾驶员运动感觉及其评价 总被引:7,自引:1,他引:7
本文提出三类感觉模拟的评价方法:主观评价,生理心理效应评价及计算机仿真评价,利用前庭系统模型,拟定了驾驶员运动感觉模拟逼真度的仿真评价方程式,并对汽车动态仿真器运动驱动算法进行了仿真评价。仿真结果表明,本文采用的前庭系统模型在所用频率范围内具有可信的精度,用它评价运动感觉模拟逼真度是行之有效的。 相似文献
105.
A. Hamish Jamson Frank C.H. Lai Oliver M.J. Carsten 《Transportation Research Part C: Emerging Technologies》2008,16(4):471-484
Forward collision warning (FCW) systems can reduce rear-end vehicle collisions. However, if the presentation of warnings is perceived as mistimed, trust in the system is diminished and drivers become less likely to respond appropriately. In this driving simulator investigation, 45 drivers experienced two FCW systems: a non-adaptive and an adaptive FCW that adjusted the timing of its alarms according to each individual driver’s reaction time. Whilst all drivers benefited in terms of improved safety from both FCW systems, non-aggressive drivers (low sensation seeking, long followers) did not display a preference to the adaptive FCW over its non-adaptive equivalent. Furthermore, there was little evidence to suggest that the non-aggressive drivers’ performance differed with either system. Benefits of the adaptive system were demonstrated for aggressive drivers (high sensation seeking, short followers). Even though both systems reduced their likelihood of a crash to a similar extent, the aggressive drivers rated each FCW more poorly than their non-aggressive contemporaries. However, this group, with their greater risk of involvement in rear-end collisions, reported a preference for the adaptive system as they found it less irritating and stress-inducing. Achieving greater acceptance and hence likely use of a real system is fundamental to good quality FCW design. 相似文献
106.
107.
Cantor 型非齐次马氏链强极限定理的研究 总被引:6,自引:0,他引:6
王康康 《江苏科技大学学报(社会科学版)》2006,20(5):19-23
研究了对任意Cantor型非齐次马氏链普遍成立的一类强大数定理。证明中利用条件期望以及马氏性的概念,采用测度的网微分法并运用纯分析运算得出结论。作为推论,得到随机变量序列已有的经典强大数定律以及对任意随机变量序列普遍成立的强大数定律。 相似文献
108.
介绍了汽车再制造工程的内涵,表明开展再制造工程在我国是贯彻科学发展观、构建循环经济、实现可持续发展战略的重要途径。对比了我国与国外的汽车再制造发展情况,分析了我国汽车再制造面临的机遇与存在的问题,并对我国汽车再制造工程的发展作出了展望。 相似文献
109.
介绍了目前世界上公路车辆探测方面所进行的一些相关研究及其方法,并对传感器融合检测方法进行了阐述,最后对目前本领域研究所面临的问题进行了简单的概括。 相似文献
110.
Pengfei Liu 《运输规划与技术》2020,43(3):279-292
ABSTRACTConnected and autonomous vehicle (CAV) technologies are expected to change driving/vehicle behavior on freeways. This study investigates the impact of CAVs on freeway capacity using a microsimulation tool. A four-lane basic freeway segment is selected as the case study through the Caltrans Performance Measurement System (PeMS). To obtain valid results, various driving behavior parameters are calibrated to the real traffic conditions for human-driven vehicles. In particular, the calibration is conducted using genetic algorithm. A revised Intelligent Driver Model (IDM) is developed and used as the car-following model for CAVs. The simulation is conducted on the basic freeway segment under different penetration rates of CAVs and different freeway speed limits. The results show that with an increase in the market penetration rate, freeway capacity increases, and will increase significantly as the speed limit increases. 相似文献