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城市客车发展的回顾 20世纪90年代前中期,我国城市客车的一个明显特征就是生产集中度高,行业竞争不激烈.城市客运业划归城建系统,城市客车主要由城建系统的企业生产,如常州客车厂、武汉公用客车厂、北京客车厂和上海客车厂等,也有一些跨系统的企业,如丹东黄海客车厂和萍乡客车厂等.当时老式传统型城市客车和公路客车差异较小,无非是少了一两排坐位或多了一扇门罢了,城市客车的底盘与公路客车的底盘差别不大,甚至通用,因而性能难以令人满意.上海客车厂、北京客车厂、常州客车厂等几乎占据行业的垄断地位.由于城市客运属于公用服务性事业,地方有政策扶持,加之城市化进程不快,所以不少企业缺乏市场意识,不太注重技术投入,产品更新换代周期长,技术水平落后,内部管理缺乏科学性. 相似文献
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简要介绍黄河客车底盘系列的生产概况,较详细说明用该系列盘改装的6种客车的主要技术技术在性能参数,供客车厂选用。 相似文献
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简要介绍德国凯斯鲍尔客车厂第五分厂的工厂概况及其工厂设计的三个核心目标,以及其生产流水线的工艺特点,特别是其柔性生产线的情况。 相似文献
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2007年12月19日,作为"上饶经济发展名片"的上饶客车厂新厂区彩旗飘扬,鼓乐齐鸣,嘉宾云集,共同庆祝上饶客车厂新厂竣工暨博能集团成立15周年. 相似文献
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第二汽车制造厂与杭州市携手,联合发展汽车工业协议、浙江客车厂加入“二汽”,实行资产一体化经营理合同的签字仪式,6月3日在杭州举行。杭州重型机械厂、浙江客车厂加入二汽,与二汽杭州汽 相似文献
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一汽客车有限公司是一汽集团所属的全资子公司,2002年9月正式组建。一汽客车有限公司拥有客车整车生产基地——一汽客车大连客车厂、一汽客车无锡汽车厂和客车底盘生产基地——一汽客车有限公司底盘厂。公司总部设在吉林省长春市投资环境优越的经济技术开发区。 相似文献
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2004年,中通客车携手西域客车厂成立新疆中通,期望能充分发挥双方企业的优势及新疆得天独厚的地域优势,共同打造我国西部地区最具竞争力的客车生产基地. 相似文献
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James M. Carson Staff Engineer Walter W. Wierwille Professor 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1978,7(4):233-253
Based on vehicle constraints and known human operator characteristics, a strategy model was postulated for describing behavior in the lane keeping task. This model includes nonlinear thresholds operating on vehicle yaw and lateral translation, random input sources to account for spurious driver activity, and smoothing to account for driver response lag. The output of the model is steering wheel position
To determine model parameters and model suitability in describing driver behavior, recordings were made for driver-subjects performing a lane-keeping task in a moving base driving simulator having a computer generated display. A procedure involving both analytic and experimental techniques was then developed for determining the model parameters of each driver
Statistical comparisons and visual inspections made between driver-vehicle and model-vehicle time histories indicate a high degree of correspondence. Models such as these show promise in obtaining a better understanding of driver behavior and driver-vehicle response by incorporating nonlinear elements in the driver model. 相似文献
To determine model parameters and model suitability in describing driver behavior, recordings were made for driver-subjects performing a lane-keeping task in a moving base driving simulator having a computer generated display. A procedure involving both analytic and experimental techniques was then developed for determining the model parameters of each driver
Statistical comparisons and visual inspections made between driver-vehicle and model-vehicle time histories indicate a high degree of correspondence. Models such as these show promise in obtaining a better understanding of driver behavior and driver-vehicle response by incorporating nonlinear elements in the driver model. 相似文献
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"在我国,卡车驾驶员相对而言算是一个高危职业,很少有家长愿意自己的孩子从事这个行业。一些80后的新一代卡车驾驶员,都是从小就酷爱卡车,凭借自己的一腔热情进入这个行业的,起初突破了来自各方的阻力和障碍,才实现了自己的卡车梦。 相似文献
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汽车在碰撞中利用乘员保护系统的约束作用避免或减缓乘员与车内结构二次碰撞对乘员造成的伤害。介绍了小红旗系列轿车匹配SRS-40驾驶员气囊的试验原则和乘员约束系统的一般开发方法。通过试验可知,小红旗轿车匹配了SRS-40系统后,驾驶员头、颈部伤害指标较不装气囊时有显著下降。 相似文献
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Comparing the self-assessed and examiner-assessed driving skills of Japanese driving school students
Previous research about subjective driving skills has revealed that drivers, especially younger males, tend to rate their driving skills more highly than those of the average driver. This study examines the accuracy of Japanese novice drivers' self-evaluation of their driving skills by comparing their self-assessments with assessments made by a driving examiner. We also examined the effects of gender and age on the accuracy of driver self-evaluation of their skills. 相似文献
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Young H. Cho J. Kim Assistant Professor 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1996,25(1):51-69
A method to study handling characteristics of a vehicle moving along a curved path is presented. A simple bicycle model and a feedback controller with proportional gain are used to simulate the vehicle and the driver. The lateral stability of the vehicle/driver system is analyzed by using the root locus method and numerical integration in the time domain. The effect of the curvature on the system stability is discussed in detail. A new suggestion is made for the look ahead distance to calculate the preview lateral error of the vehicle with respect to the center of the road. Interesting results are shown for some important parameters such as the gain factor, the vehicle speed and the curvature of the path. Possible extensions of the method to more general cases and other applications are discussed. 相似文献
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