排序方式: 共有118条查询结果,搜索用时 15 毫秒
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佛山市摩托车交通问题与解决方案研究 总被引:6,自引:3,他引:3
王振群 《交通运输系统工程与信息》2003,3(1):80-83
以大量翔实的数据说明了摩托车交通问题是制约佛山市交通可持续发展的主要原因之一。结合佛山市交通基础设施及车辆组成的现状,根据对未来10年的车辆构成的预测,有针对性地提出了解决佛山市摩托车交通的三步走方案,即:第一步,加强摩托车管理,采取疏导与初步限制策略;第二步,合理城市与交通管理等规划,大力发展公共交通;第三步,在一定时期内大力限制摩托车增长,并最终取缔。文中还给出了每一步方案实施过程中的关键问题,并介绍了其中一些方法的实际应用情况。 相似文献
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Crash warning systems have been deployed in the high-end vehicle market segment for some time and are trickling down to additional motor vehicle industry segments each year. The motorcycle segment, however, has no deployed crash warning system to date. With the active development of next generation crash warning systems based on connected vehicle technologies, this study explored possible interface designs for motorcycle crash warning systems and evaluated their rider acceptance and effectiveness in a connected vehicle context. Four prototype warning interface displays covering three warning mode alternatives (auditory, visual, and haptic) were designed and developed for motorcycles. They were tested on-road with three connected vehicle safety applications - intersection movement assist, forward collision warning, and lane departure warning - which were selected according to the most impactful crash types identified for motorcycles. Combined auditory and haptic displays showed considerable promise for implementation. Auditory display is easily implemented given the adoption rate of in-helmet auditory systems. Its weakness of presenting directional information in this study may be remedied by using simple speech or with the help of haptic design, which performed well at providing such information and was also found to be attractive to riders. The findings revealed both opportunities and challenges of visual displays for motorcycle crash warning systems. More importantly, differences among riders of three major motorcycle types (cruiser, sport, and touring) in terms of rider acceptance of a motorcycle crash warning system were revealed. Based on the results, recommendations were provided for an appropriate crash warning interface design for motorcycles and riders in a connected vehicle environment. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(5):648-670
This paper presents a motorcycle direct dynamic formulation by the Jourdain's principle approach. This vehicle is considered as an assembly of six rigid bodies and the resulting equation of motion allows to simulate 11 degrees of freedom. The vehicle geometry is described and a step-by-step procedure is introduced to evaluate the kinematics and the generalised efforts of the considered vehicle. In addition, to simulate the equation of motion, a Lyapunov-based stabilisation is developed to assess the vehicle behaviour in response to a propulsion/braking torque applied on the vehicle's wheels and a rider torque exerted on the motorcycle's handlebar. Simulation results reveal some dynamic features such as load transfer and counter-steering phenomena. 相似文献
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“喷霜”是指胶料中的液体或固体配合剂由内部向外部迁移到表面的现象,有喷粉、喷油和喷蜡3种形式,它不仅影响摩托车部品的外观质量,还会影响胶料的工艺性能和硫化胶的物理性能,降低胶料的自粘性,给成型带来困难。 相似文献
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针对摩托车交通的快速发展对城市交通状况的负面影响,本研究选取典型城市佛山市南海区进行了居民出行调查和公交意向调查。从摩托车出行行为入手,分析了人们选择摩托车出行的原因、摩托车方式对出行行为的影响、摩托车出行方式与其替代方式的联系和区别,并在此基础上建立了出行方式选择的Multinomial Logit模型,深入分析了影响出行方式选择的主要因素。研究还结合摩托车车主对公共交通的评价意见和限摩政策可能带来的出行方式的调整,评价了大力发展公共交通和限制摩托车的策略对改善现有交通状况的效果,对类似城市解决摩托车交通问题有借鉴作用。 相似文献
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MS标准是马来西亚国家标准,MS 2413.1~3—2011(P)《ELECTRIC MOTORCYCLESSPECIFICATION》电动摩托车标准分总则、安全要求和性能测试3部分。截止2011年7月31日,马来西亚共制定MS国家标准6 411份,其中直接采用国际标准3 833份,该国的国家标准战略规划为尽可能采用国际标准,以增强产品在国际上的竞争力。 相似文献
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阐述了船舶动力定位系统(DPS)推进器推力损失的形成机理,采用基于模型试验的半经验计算方法,对推进器与船体之间的相互干扰﹑推进器之间的相互干扰、海流﹑波浪等因素引起的推进器推力损失进行了计算.在已知推进器的参数和布置以及海流、波浪等环境载荷参数条件下,计算和分析了DPS推进器在360°的范围内产生推力时的推力损失图.针对计算结果提出了推力最优分配中设置禁区的概念,并对如何减小推力损失的措施进行了探讨. 相似文献
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