Electric vehicles will longitudinally vibrate obviously under acceleration and regenerative braking conditions (because of torsional vibration of the electric vehicle powertrain).This paper includes models of motor rotor,gear reducer and differential assembly,half shafts,tire and body and nonlinear powertrain dynamic model in consideration of gear backlash and frictional characteristics between tire and ground.Real car tests confirm that it is correct under acceleration conditions.Then a two mass-spring damper linear model which is simplified from the nonlinear powertrain dynamic model is proposed to design torsional vibration control algorithm based on state feedback.The simulation results show that the algorithm can actively eliminate torsional vibration.

关键词：汽车；电动汽车；动力系统

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Improvised explosive devices and car bombs have long been identified as threats to U.S. Army personnel deployed in Iraq and Afghanistan. They have gained considerable attention and notoriety, even infamy, among our troops, who have had to learn the appropriate responses and countermeasures to contend with the fielding of these systems against them. Far less recognized is the fact that a similar threat embodied in car bombs has emerged much closer to our homeland within Mexico. Since mid-2010, cartel car bombings have taken place in a country on our southern border and have been targeted against both the forces of opposing cartels and those belonging to Mexican military and law enforcement agencies. With the election of the new presidential Institutional Revolutionary Party (PRI) administration in July 2012, these car bombings have ceased altogether after rapidly escalating in their levels of employment. Whether this was a response to the expected shift in countercartel policies from the National Action Party (PAN) to the PRI administration that began in December 2012, simply a strategic pause of some sort, or an outcome of another casual factor is unknown. What is important is that the use of car bombs in Mexico by the cartels has the potential to threaten U.S. agents, facilities, and interests in that nation and could also conceivably spread to our border cities though this would appear to be a very unlikely possibility based on the use of car bomb trends and analysis presented in this Paper. The authors of this Letort Paper, Dr. Robert Bunker and John Sullivan, draw upon their wealth of knowledge and expertise pertaining to the Mexican cartels and organized crime and, interestingly, is derived from their long-standing counterterrorism backgrounds with regard to suicide bombing and active aggressor response.

关键词：汽车；汽车爆炸；交通安全

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The two-dimensional traffic model of Biham, Middleton and Levine (Phys. Rev. A, 1992) is a simple cellular automaton that exhibits a wide range of complex behavior. It consists of both northbound and eastbound cars traveling on a rectangular array of cells, each cell equipped with a traffic signal. The traffic signals switch synchronously from allowing northbound flow to eastbound flow. By gating individual traffic signals, i.e. allowing individual traffic signals to break from synchrony in predetermined, deterministic scenarios based on the local state of traffic, the range for which the system self-organizes into a state of unimpeded flow is extended. On a 100x100 cell array, this additional intelligence enables accomodation of 200 cars more than the original BML model, without any reduction in average velocity.

关键词：汽车；信号；BML模型

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A template of pre-crash scenarios is presented to depict national crash statistics and kinematic information of time-to-collision for the design of appropriate crash countermeasures based on vehicle-to-vehicle (V2V) communications. This template serves the development of functional requirements, performance specifications, test procedures, and benefits estimation for potential light-vehicle V2V safety applications. A set of ten pre-crash scenarios is suggested as a priority list to be addressed by V2V technology for light vehicles (i.e., passenger cars, vans and minivans, sport utility vehicles, and light pickup trucks with gross vehicle weight ratings of 10,000 pounds or less). This report presents the time-to-collision equations as well as the crash statistics for each of the ten priority scenarios based on data available in the General Estimates System, National Motor Vehicle Crash Causation Survey, and Event Data Recorder databases.

关键词：汽车；安全通信；撞车

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It is very important to obtain an ideal basic shape with optimal aerody namic characteristics in the auto-body styling design based on the whole shape optimization.Through obtaining the solutions for conflict problem in the auto-body styling aerodynamic design cooperating extension engineering, a variable cross-section method based on aero dynamic theoretical model to obtain ideal basic shape for car body is proposed.A theory model based on aerodynamics is developed.In addition, a generation method for a series of ideal basic bodies with favorable aerodynamic characteristics is developed, which enables the generation of these basic bodies by a variable cross-section method.This method is finally realized and it is shown in the evaluation that it is a new way for the auto-body styling design based on whole shape optimization.

关键词：汽车；车身形状；截面

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关键词：汽车；电动汽车；传输齿轮

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Based on the research of the CAN/LIN bus communication protocol,an automobile lamps diagnostic system based on the CAN/LIN bus is designed.After the completion of the software and hardware designs of CAN nodes,LIN nodes and CAN/LIN nodes,the faults of automobile lamps can be successfully diagnosed.LIN node collects light switches and the gateway controls the car light's status via detecting the data frame on the LIN bus.The design and complementation of CAN node,LIN node and CAN/LIN gateway was finished,which made it possible to detect failures in vehicle.

关键词：汽车；灯光；故障诊断

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报告从宏观政策环境、地方政策动态、竞争对手情报、产品与技术创新等几个方面进行了分析及评论。

关键词：宏观政策环境；地方政策动态；竞争对手情报；产品与技术创新

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报告从宏观政策环境、地方政策动态、竞争对手情报、产品与技术创新等几个方面进行了分析及评论。

关键词：宏观政策环境；地方政策动态；竞争对手情报；产品与技术创新

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报告从宏观政策环境、地方政策动态、竞争对手情报、产品与技术创新等几个方面进行了分析及评论。

关键词：宏观政策环境；地方政策动态；竞争对手情报；产品与技术创新

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