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基于复合神经网络模型的四轮独立驱动电动车控制 总被引:3,自引:1,他引:3
针对四轮独立驱动电动车的运动控制,提出了一种基于Ackerman转向模型和神经网络方法的复合模型,用于对各个车轮转速进行仿真和控制。这种复合模型的特点是结构非常精简,其参数可用实际整车数据来直接整定,尤其适合于车辆的中低速运行控制。 相似文献
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电动汽车驱动控制系统研究 总被引:2,自引:0,他引:2
讨论了电动汽车的两种不同驱动方式,针对电动汽车驱动系统的特殊性,分析了直流传动系统和交流传动系统的特点,结合驱动控制技术的现状,提出了电动汽车交流感应电动机磁场定向控制方案,研究了控制方法,并介绍了新型控制器件。 相似文献
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对电动汽车的电源驱动系统作了较炙详细的介绍,重点介绍电动汽车的驱动系统,还就混合驱动车的研制状况作了简单叙述。 相似文献
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混合型电动汽车电气驱动高频交流分布系统的研究 总被引:1,自引:0,他引:1
提出了一种用于混合型电动汽车电气驱动的高频交流分布系统,介绍了这种系统的特点和组成,分析了驱动系统的不同类型和运行模式,阐述了混合型电动汽车的能量管理与控制,分析结果表明,高频化是电动汽车电气驱动系统未来发展的主要方向之一。 相似文献
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HEV6700混合驱动中型客车的研制 总被引:1,自引:0,他引:1
驱动汽车成为最近几年电动汽车研究的热点之一,本文介绍了HEV6700混合驱动中型客车各分系统的设计计算过程,并介绍了整车的结构布置。 相似文献
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电动汽车动力驱动系统现状及发展 总被引:9,自引:2,他引:9
本文介绍了电动汽车动力驱动系统设计,着重分析比较电动汽车驱动系统技术诸如电机、功率变换器和控制技术等方面,并指出其技术热点和发展趋势。 相似文献
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电动汽车驱动系统及其控制方案是电动汽车性能的关键技术。介绍了电动汽车驱动电机不同类型的特点和电动汽车采用的控制技术。 相似文献
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本文提出了电动汽车驱动后桥轻量化优化改进及应用,介绍了国外和国内汽车轻量化的应用及取得的成果,电动汽车驱动后桥工作原理、产品结构、使用场所,分析了传统电动汽车驱动后桥与采用轻量化优化改进方案后的电动汽车驱动后桥的区别,及其在市场的应用和未来前景。 相似文献
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车辆AMT中道路条件及驾驶意图的模糊识别 总被引:1,自引:0,他引:1
本文论述了车辆AMT中道路条件及驾驶意图模糊识别的必要性,提出了道路条件及驾驶意图的模糊识别方法,最后给出了在AMT挡位决策中的应用实例。 相似文献
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从工作记忆的测量范式、研究方法入手,总结工作记忆对驾驶行为的影响。梳理了国内外工作记忆与驾驶行为关系的研究现状。结果表明,与工作记忆容量低的驾驶员相比,工作记忆容量高的驾驶员,在一定的认知任务下,驾驶稳定性更好。此外,文章预估了工作记忆在驾驶行为领域今后的发展趋势,总结了现有研究的不足,从工作记忆量化及工作记忆训练的角度上为驾驶行为研究领域的发展提供了思路。 相似文献
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S. Tamsanya S. Chungpaibulpatana B. Limmeechokchai 《International Journal of Automotive Technology》2009,10(2):251-264
The exhaust emissions and fuel consumption rates of newly registered automobiles in Thailand are currently assessed using
the standard driving cycle of the Economic Commission of Europe (ECE). Because of the highly different driving conditions,
the assessment results may not reflect realistic amounts of emissions and fuel consumption for vehicles in Bangkok traffic,
which is well known for its congestion. The objective of this study is therefore to develop a new driving cycle for vehicles
traveling on Bangkok’s main roads during peak traffic hours. This paper first presents the development of a method for selecting
representative road routes with traffic conditions that are representative of traffic in Bangkok for conducting real-world
driving speed data collection. These real-world data are obtained by driving a car equipped with a speed-time data logger
along those selected road routes. Several driving characteristics, including various profiles of microtrips, are analyzed
from the collected speed-time data, and a number of target driving parameters are then defined for use as a set of criteria
to justify the best driving cycle. A procedure for generating driving cycles from the analyzed real-driving data is also developed,
and the method to select the cycle that is most representative of Bangkok traffic is described. Comparisons found in the study
show that the target driving parameters of the newly developed driving cycle are much closer to those obtained from the real-world
measured data than those calculated from the presently used European drive cycle. This would imply that the obtained driving
cycle will produce more realistic results of the emissions and fuel consumption assessment tests for vehicles traveling in
Bangkok. The methods developed in this study for route selection and driving cycle construction can easily be adopted by other
big cities to develop their own vehicle driving cycles. Furthermore, although the developed methods are for passenger cars,
similar approaches can be applied to develop driving cycles for other types of vehicle, such as city buses and pick-up trucks. 相似文献
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The aim of the present study was to develop and examine the quality of the Ambulance Driver Self-assessment Questionnaire (ADSQ) and the Ambulance Driver Peer-assessment Questionnaire (ADPQ) measuring aspects of, driving performance, driving style and driving competence. In addition the ADSQ measures self-reflection and safety-attitudes. The aim of the study was also to examine ambulance drivers' self- and peer-assessments as well as to examine the accuracy of self-assessments by comparing self-assessed and peer-assessed driving performance, driving style and competence. 76 ambulance drivers employed at two ambulance stations in northern Sweden completed ADSQ and ADPQ. Item analyses were conducted to examine the psychometric properties of the items, and based on the results some revisions were made to improve the questionnaires. The revised questionnaires were functioning rather well, although some subscale demonstrated low internal consistency. Subscale inter-correlations provided support for construct validity. Self- and peer-assessments indicated safe driving performance and good driver competence, which is positive from a traffic safety perspective. A comparison of mean self- and peer-assessment ratings, controlling for age, gender and driving experience showed no significant differences, except for the subscale overtaking. This indicates that ambulance drivers' self-assessments are realistic in most areas. 相似文献
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行驶跑偏是指车辆在行驶过程中偏离了原来直线驾驶的状态,不仅会影响车辆的操纵稳定性和转向性能,更可能会危及乘客的人身安全。某SUV车型从设计到生产导入阶段,进行小批量投产时,出现大量车辆向左行驶跑偏现象,合格率约为60%。经过鱼骨图排查法的人、机、料、法、环等几个方面分析,列举出15种可能造成车辆行驶跑偏的因素。经过逐一排查,发现该SUV车型存在前副车架的控制臂安装支架尺寸超差,白车身的前、后副车架安装点尺寸控制不合理,前后悬模块装配一致性差及测试道路不规范等主要问题,以上四种问题造成的偏差趋势与实际该SUV车辆向左行驶跑偏现象相符,因此需要对以上问题进行优化及改进。文章是在这个背景下,针对该SUV车型的向左行驶跑偏现象,通过对问题零部件进行交叉试验,三坐标尺寸测量以及生产线生产过程一致性的逐一排查,逐一分析了四种问题发生的根本原因,并由此提出了优化改进方案,通过对比方案实施前后的实测数据,验证优化改进方案是否可行。优化后实测行驶跑偏量,符合企业行驶跑偏判定标准,行驶跑偏现象消失并保证了该SUV车型的正式量产时间。 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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随着轿车车身制造技术的发展,车身设计在汽车工业中显得尤为重要.文章着重介绍了白车身的制造技术.CAS/CAD/CAE/CAM的应用,使计算机仿真技术在车身开发过程中建立统一的三维数字模型,缩短了开发时间,方便了对产品的理解和工艺性分析,同时也提高了车身制造模具设计质量.此外,在车身钣金件生产工艺中,激光拼焊和管型材液压成型等新的加工制造技术逐渐推广开来.点焊是采用最为广泛的车身板料的联接方法,但随着车身用材料的发展,原来的点焊不再适合不同材料零件之间的联接.在车身制造中便出现了一些新的零件与零件的联接方法,如自穿铆接及摩擦点焊等,保证了车身组装的质量. 相似文献