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正2018年4月25-27日,备受瞩目的 2018中国汽车论坛在北京隆重召开。本届论坛以"新时代、新趋势、新策略——聚焦汽车产业高质量发展"为主题。据组委会统计,近2 000名海内外嘉宾出席本次论坛。中国汽车论坛是由中国汽车工业协会(CAAM)、中央电视台财经频道联合主办,世界汽车组 相似文献
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<正>4月16-18日,2019中国汽车论坛在上海召开。本届论坛主题为"创新、开放、绿色——聚焦汽车产业变革与机遇"。中国汽车论坛是由中国汽车工业协会(CAAM)、中央广播电视总台央视财经频道联合主办,世界汽车组织(OICA)支持的国内顶级高端汽车论坛,也是世界经济论坛(达沃斯)唯一全面参与的行业顶级论坛。自2011年以来,已经成 相似文献
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John.B.Moavenzadeh 《上海汽车》2013,(5):1-2
在第十五届上海国际汽车工业展览会举行期间,2013中国汽车论坛于4月21日在上海隆重召开。论坛主题为"新增长形势下中国和世界汽车产业——战略、品牌、国际化"。论坛在闭门峰会、大会论坛、专题论坛中全面探讨当前汽车行业最关心的问题和国内外各界最迫切需要解决的问题。世界经济论坛美国分部交通运输行业资深总监John.B.Moavenzadeh先生在会上发表了主题为"世界汽车工业发展现状及未来趋势"的演讲。 相似文献
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2021年4月9日,中国汽车论坛组委会正式宣布,"2021中国汽车论坛"将于6月17日-19日在上海隆重召开。本届论坛主题为"新起点新战略新格局——推动汽车产业高质量发展",届时将邀请200余位嘉宾发表演讲,预计2000人左右到场参会。从会议规模上来看,本届论坛将成为2021年中国乃至全球汽车界的一次重要盛会。 相似文献
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Z. Zhong G. Kong Z. Yu X. Xin X. Chen 《International Journal of Automotive Technology》2012,13(3):487-496
The automated mechanical transmission (AMT) is gaining popularity in the automotive industry, due to its combination of the
advantages of mechanical transmissions (MT) and automatic transmissions (AT) in terms of fuel consumption, low cost, improved
driving comfort and shifting quality. However, the inherent structural characteristics of the AMT lead to disadvantages, including
excessive wear of the clutch plates and jerk and traction interruption during the shift process, that severely affect its
popularity in the automatic transmission industry. The emerging technology of shifting control without the use of the clutch
is a promising way to improve the shifting transients of AMTs. This paper proposes a control algorithm that combines speed
and torque control of the AMT vehicle powertrain to achieve shifting control without using the clutch. The key technologies
of accurate engine torque and speed control and rapid position control of the shift actuators are described in detail. To
realize accurate engine speed control, a combined control algorithm based on feed-forward, bang-bang and PID control is adopted.
Additionally, an optimized closed-loop position control algorithm based on LQR is proposed for the shift actuators. The coordinated
control algorithm based on engine and shift actuator control is described in detail and validated on a test vehicle equipped
with an AMT. The results show that the coordinated control algorithm can achieve shifting control without the use of the clutch
to improve driving comfort significantly, reduce shift transients and extend the service life of the clutch. 相似文献
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Motivated by the development of high-precision digital maps for advanced driver assistance system (ADAS) in recent years, this study provides a new approach to solve the problems of the conventional automatic transmission vehicle travelling on sloping roads. Based on vehicle dynamics, shift problems on hilly roads are analyzed. A novel intelligent shift strategy is proposed, which consists of a dynamic shift schedule for the uphill, a safety shift schedule for the downhill, and a comprehensive economical shift schedule for the gentle slopes. A set of driver-in-loop co-simulation tests was conducted in a driving simulator that is equipped with a MATLAB/Simulink dynamics simulation platform. The test results verified the effectiveness of the new intelligent shift strategy. With the road information provided by a high-precision digital map, busy shifting can be eliminated, and improved dynamic performance can be achieved for a vehicle travelling on the uphill roads; undesired upshift can be prevented, and engine traction resistance can be used to relieve the load of braking system when a vehicle travelling on the downhill roads; also, fuel consumption can be reduced for a vehicle travelling on a gently sloped road. Consequently, this novel intelligent shift strategy offers a reliable and effective solution for improving a vehicle’s driving performance on a hilly road. 相似文献
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纯电动轿车AMT换挡过程协调匹配控制方法 总被引:1,自引:0,他引:1
为实现装备机械式自动变速器(AMT)的纯电动轿车能够快速、准确、平稳地换挡,以建立的换挡过程数学模型为基础,详细分析了换挡过程不同阶段换挡冲击产生的机理,提出了摘挡前驱动电机切换至自由模式的转矩控制方法,确定了摘挡后驱动电机调速目标值和执行机构最优运动速度,提出了挂挡完成后驱动电机转矩恢复方法。针对换挡过程驱动电机的协调控制问题,提出了整车控制器控制驱动电机参与换挡过程的综合协调匹配控制方法。为了验证控制策略的正确性,研制开发了纯电动轿车用AMT样机,并进行了样车道路试验。试验结果表明:所制定的控制策略能很好地实现挡位的自动平顺切换,且换挡时间短。 相似文献
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为实现车辆起步加速过程驾驶性客观评价和优化的需求,通过对实际客户驾驶行为大数据样本的分析,构造了基于客户体验的起步加速客观测试评价工况.将起步加速工况进行了驾驶性特征提取和细分.并从响应性、平顺性、收敛性和风格等方面对客观评价指标进行了设计.通过对竞品驾驶性的测试和指标分析,获得了驾驶性评价指标以及驾驶性正向设计需求.... 相似文献
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为研究车辆制动工况下路面抗滑性能对弯道行车安全的影响,以车辆动力学分析软件AD-AMS为仿真平台,提出采用轮胎解析参数、整车参数、路面抗滑值构建耦合关联的车辆-轮胎-路面模型,在此基础上研究不同湿滑路面状态下弯道行驶车辆的运动学参数值变化情况,探索路面抗滑性能与表征行车安全风险的运动学参数值之间的关系.研究结果表明,路面抗滑性能影响车辆运动学参数值变化是诱发交通事故的主要因素.较低的弯道路面抗滑性能易使车辆在制动时出现急速横摆、甚至侧翻的交通事故;车辆两侧轮胎接地面抗滑值不均衡对弯道行车安全的影响高于对直道行车安全的影响,车辆极易在弯道制动时出现因抗滑值不均衡而无法保持有效转弯半径、进而冲出车道的交通事故.研究可为制定弯道行车安全的保障措施提供理论依据. 相似文献
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