共查询到19条相似文献,搜索用时 125 毫秒
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汽车驾驶员模型是汽车交通安全、智能交通系统、汽车自动驾驶和车辆巡航等技术的基础研究内容和关键环节之一。按照汽车驾驶员模型的研究方向及应用,将驾驶员模型分为基于人—车—环境闭环系统汽车操纵稳定性的驾驶员模型、基于智能交通系统的驾驶员行为模型和基于交通安全的驾驶员疲劳模型等类型,综述了上述各类汽车驾驶员模型的研究现状,对各类驾驶员模型存在的不足进行了分析论述,并展望了汽车驾驶员模型的发展方向及趋势。 相似文献
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随着汽车工业的快速发展,市场上使用自动变速器的车辆不断增多。如今,自动变速器在汽车上配置已成为一种潮流。自动变速器的应用可提高行车的安全性,降低驾驶员的疲劳强度,延长驾驶员的使用寿命。但因其具有结构复杂、制造精度高等特点,要求使用自动变速器车辆的驾驶员具有较高的素质,能掌握正确的操作方法。 相似文献
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由于手动换档性能受驾驶员操纵技术水平高低的影响很大,直接影响到汽车使用性能的发挥,加之频繁换档易使驾驶员疲劳,影响汽车行驶安全,所以,应用自动变速箱一直是人们长期追求的目标.近代电子技术在车辆上的广泛应用使得自动变速技术在车辆上的应用越来越广泛. 相似文献
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气-液联动式液压倾卸系统可控制自卸车货厢的下降速度,并可从举升状态或下降状态自动地切换到中停状态,从而保证自卸汽车卸货的安全。 相似文献
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由于手动换档性能受到驾驶员操纵技术水平高低的影响很大,直接影响到汽车使用性能的发挥,加之频繁换档易使驾驶员疲劳,影响汽车行驶安全,所以应用自动变速器一直足人们长期追求的目标.特别足近代电子技术在车辆上的广泛应用,使得自动变速技术在车辆上的应用越来越广泛. 相似文献
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一、现代自动变速器的类型和特点 车辆自动变速是汽车电控技术的一个重要组成部分。采用计算机和电子控制技术实现车辆自动变速,能消除驾驶员换档技术的差异、减轻驾驶员的劳动强度,提高行车安全性,提高车辆的动力性和经济性。汽车行驶的速度是不断变化的,这就要求汽车的变速器的变速比要尽量多,这就是无级变速(简称CVT)。 相似文献
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J. Takahashi M. Yamakado S. Saito 《International Journal of Automotive Technology》2013,14(6):921-926
This paper describes the development of the braking assistance system based on a “G-Vectoring” concept. The present work focuses in particular on “Preview G-Vectoring Control” (PGVC), which is based on the “G-Vectoring Control” (GVC) scheme. In GVC, the longitudinal-acceleration control algorithm is based on the actual lateral jerk. PGVC decelerates a vehicle before it enters a curve, and is based on a new longitudinal-acceleration control algorithm which uses predicted and actual lateral jerk. Using the predicted lateral jerk makes it possible to decelerate the vehicle prior to curve entry. This deceleration can emulate a driver’s deceleration as the vehicle approaches a curve entry. PGVC is based on such deceleration algorithms and enables automatic deceleration similar to the action of a driver. It is thus possible to significantly improve the driver’s feeling when this system is activated. Driving tests with this new control system on snowy-winding course confirmed that the automatic brake control quality improved considerably compared to manual driver control considering both lap time and ride quality. These results indicate that PGVC can be a useful braking assistance system not only to improve the driver’s handling performance but also to reduce the brake-task during driving on winding roads. 相似文献
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汽车自动离合器控制系统的原理与检修 总被引:1,自引:0,他引:1
汽车的起步、换档、停车等都需要通过操纵离合器来实现,而自动离合器能够模拟经验丰富的驾驶员来完成离合器的分离与接合。本文以韩国大宇Matiz(新巧龙)乘用车装用的自动离合器控制系统为例,介绍该系统的原理与检修。 相似文献
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轿车中央控制系统能针对轿车的某种特定状况,借助微电脑按照人的愿望实现对轿车各种功能控制系统的集中控制,故可减少对驾驶员本身素质的依赖性,提高轿车的舒适性和安全性,增强轿车在未来市场的竞争力,主要探讨了轿车中央控制系统中监测系统的结构及工作原理。 相似文献
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A speed control algorithm for an ACC (Adaptive Cruise Control) system for curved roads is proposed based on driver behavior characteristics. As the foundation of this research, a driver speed model for curved roads is developed using a series of experimental data regarding driver behavior. To adapt the model to each driver’s individual curve speed behavior, the coefficients of the model are identified in real time from the data sequences collected during drivers’ manual operation stage by a self-learning algorithm based on a Recursive Least-Square (RLS) method with a forgetting factor. Using this algorithm, the parameters of the driver model can be identified from the data collected in the manual operation phase, and the identification results are applied during the ACC automatic control phase. Based on the developed model, the ACC speed control algorithm is modified to provide each individual driver with a customized speed profile for the scenario of a curved road with no car ahead. Tests verify the applicability of the modified system. 相似文献
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自动变速器能够自动进行换挡操作,不需要驾驶员踩离合换挡,大大减轻了驾驶员的劳动强度,尤其在双离合自动变速器推出之后进一步推动了变速器自动化的进程。文章在分析了现有自动变速器和手动变速器的优缺点之后,根据机械传动原理给出了变速器电控化、精确化的方案。该设备是一种新型的由电脑进行控制的自动变速器,能够在极短的时间内完成换挡操作,同时保证传动的效率。在实际制作过程中证明了本套方案的可行性、可靠性及耐久性,具有不可比拟的优势。 相似文献