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报告分类:外文技术报告 检索词:汽车

  • 281.高攻角研究车辆纵向控制器(HARV):设计、分析和仿真结果

    [汽车制造业] [2013-12-22]

    This paper describes the design, analysis, and nonlinear simulation results (batch and piloted) for a longitudinal controller which is scheduled to be flight-tested on the High-Alpha Research Vehicle (HARV). The HARV is an F-18 airplane modified for and equipped with multi-axis thrust vectoring. The paper includes a description of the facilities, a detailed review of the feedback controller design, linear analysis results of the feedback controller, a description of the feed-forward controller design, nonlinear batch simulation results, and piloted simulation results. Batch simulation results include maximum pitch stick agility responses, angle of attack alpha captures, and alpha regulation for full lateral stick rolls at several alpha's. Piloted simulation results include task descriptions for several types of maneuvers, task guidelines, the corresponding Cooper-Harper ratings from three test pilots, and some pilot comments. The ratings show that desirable criteria are achieved for almost all of the piloted simulation tasks.

    关键词:车辆控制器;汽车零部件
  • 282.动力学和控制的仿生汽车使用偏置一扑棱迫使功能:第2部分——控制器(Postprintword)

    [汽车制造业] [2013-12-22]

    A control strategy is proposed for a minimally-actuated flapping- wing micro air-vehicle (FWMAV). The proposed vehicle is similar to the Harvard RoboFly that accomplished the first takeoff of an insect scale flapping wing aircraft, except that it is equipped with independently actuated wings. Using the derivation of the aerodynamic forces and moments from Part I, a control allocation strategy and a feedback control law are designed that enable the vehicle to achieve untethered, stabilized flight about a hover condition. Six degree-of-freedom maneuvers near hover are demonstrated as well. The control laws are designed to make use of two actuators that control the angular position of the wing in the stroke plane. The Split-Cycle Constant-Period Frequency Modulation with Wing Bias technique, introduced in Part I, is used to allow each wing to generate non-zero cycleaveraged aerodynamic forces and moments. This technique modifies the frequencies of the up and down strokes to yield non-zero cycle-averaged drag due to the flapping motion of a wing. Additionally, the midpoint of the wingbeat profile can be modified by use of a wing bias. The bias is introduced to primarily provide pitching moment control. In this work, the sensitivities of cycle-averaged forces and moments with respect to the control parameters are computed. Single axis controllers are designed and the complete system is simulated.
    关键词:控制器;汽车;仿生汽车
  • 283.基于代理的信息系统为电动汽车充电基础设施部署

    [汽车制造业] [2013-12-22]

    The current scarcity of public charging infrastructure is one of the major barriers to mass household adoption of plug-in electric vehicles (PEVs). Although most PEV drivers can recharge their vehicles at home, the limited driving range of the vehicles restricts their usefulness for long-distance travel. In this paper, an agent-based information system is presented for identifying patterns in residential PEV ownership and driving activities to enable strategic deployment of new charging infrastructure. Driver agents consider their own driving activities within the simulated environment, in addition to the presence of charging stations and the vehicle ownership of others in their social network, when purchasing a new vehicle. Aside from conventional vehicles, drivers may select among multiple electric alternatives, including two PEV options. The Chicagoland area is used as a case study to demonstrate the different deployment scenarios are analyzed.
    关键词:电动汽车;充电
  • 284.自主车辆的高保真流动模拟在越野场景开发使用集成传感器,控制器和多体动力学

    [电气机械和器材制造业,汽车制造业] [2013-12-22]

    The mechanical behavior of a military vehicle during off-highway operation is complex and highly nonlinear. Some current vehicle concepts include added intelligence through the implementation of sensors and controllers to enable autonomous or semi-autonomous operations. Control systems have typically been developed with controls software where the mechanical plant and sensors are represented as simplified and often linearized blocks, resulting in a poor vehicle assessment. This paper describes the development of an integrated environment for a control system, mechanical system dynamics, and sensor simulation for an improved assessment of the vehicle system performance. The vehicle chosen is an autonomous robot that attempts to follow a prescribed path along an off-highway terrain. The effect of including a stability controller for vehicle mobility is assessed. The architecture of the integrated simulation environment is described and its potential to improve schedule and reduce risk of the development of mechatronic military vehicle systems is explored.
    关键词:控制器;汽车;传感器
  • 285.电磁干扰效应对汽车电子控制和安全装置。第I卷总结。

    [汽车制造业] [2013-12-22]

    This report summarizes the analysis and measurement tasks accomplished for this phase of the Dot Road Vehicle EMC/EMI program and the contents of EMC Guidelines proposed for the design and maintenance phases of electronic safety and control systems. A computerized coupling analysis program was used to determine the effects of body shielding,aperture size,and cable lengths on signal coupling in the 100to 200MHz band between a simulated mobile radio emission and a modeled air-cushion restraint system cable as it might be used in a motor vehicle. A series of susceptibility tests were performed on an electronic speed control system and an anti-skid control module to determine functional upset levels of injected signals at critical circuit ports on these devices. The upset criteria were based on performance departures from normal,resulting from the injection of interfering signals. The injected signals were designed to represent levels and durations characteristic of those generated within the vehicle or coupled from external sources. A set of basic guidelines to promote EMC in the use of electronic control and safety devices in automobiles are presented. The applications and technological developments concerned with current automotive electronics are discussed. The research conducted by the automotive industry to explore the feasibility of a central processor or control system and potential problem areas are reviewed.
    关键词:电子控制;汽车;安全装置
  • 286.合成可人为干涉的控制系统

    [计算机、通信和其他电子设备制造业,汽车制造业] [2013-11-24]

    In this paper, we present a formalism for human-in-the-loop control systems.Particularly, we focus on the problem of synthesizing a semi-autonomous controller from high-level temporal specifications that expect occasional human intervention for correct operation. We present an algorithm for this problem, and demonstrate its operation on problems related to driver assistance in automobiles.
    关键词:人为干涉控制系统;半自治控制器;汽车驾驶员
  • 287.汽车电网(V2G)电力电子的电网互联和性能测试程序

    [计算机、通信和其他电子设备制造业] [2013-11-03]

    Bidirectional power electronics can add vehicle-to-grid (V2G) capability in a plug-in vehicle, which then allows the vehicle to operate as a distributed resource (DR). The uniqueness of the battery-based V2G power electronics requires a test procedure that will not only maintain IEEE interconnection standards, but can also evaluate the electrical performance of the vehicle working as a DR. The objective of this paper is to discuss a recently published NREL technical report that provides interim test procedures for V2G vehicles for their integration into the electrical distribution systems and for their performance in terms of continuous output power, efficiency, and losses. Additionally, some other test procedures are discussed that are applicable to a V2G vehicle that desires to provide power reserve functions. A few sample test results are provided based on testing of prototype V2G vehicles at NREL.
    关键词:电子信息;电子;汽车电网;互联
  • 288.电池计算机辅助工程以设计更好的锂电池

    [计算机、通信和其他电子设备制造业] [2013-10-24]

    This presentation describes the current status of the DOE's Energy Storage R and D program, including modeling and design tools and the Computer-Aided Engineering for Automotive Batteries (CAEBAT) program.
    关键词:电子信息;计算机;锂电池;工程设计;汽车电池;电池建模软件
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