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Because transportation systems involve massive complex human activities, there exist substantial unpredictable uncertainties of the traffic demands. This paper aims at presenting an H∞ control method for transportation network that can enhance the tolerance of the system due to these uncertainties. In particular, the store‐and‐forward approach is applied to model the system into a linear form. Then, a detailed controllability analysis shows that the system is not completely controllable by taking the constraints on the green times into account. This makes difficult to apply directly the H∞ method. To overcome this difficulty, this paper isolates the fully controllable part of the transportation system, and the problem of disturbance attenuation is then solved by means of a convex optimization with linear matrix inequality. Finally, the simulation of a large‐scale hypothetical network is carried out to illustrate the results. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
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我国高速公路电子不停车收费系统联网建设即将实现全国联网,如此大规模的系统互联为高速公路的运行管理带来了新的契机.既提供了一种可靠的交通运行状态信息获取方式,也构建了一个具有相当覆盖范围的车路交互平台,从而实现路网的协同管控与出行服务水平的提升.基于此,首先给出路网可观性、可控性的概念模型;其次根据 DSRC设备双向交互的特点,提出面向路网可观性与可控性双目标优化模型,基于路网旅行时间测量误差最小化为目标的路网可观性评估模型及基于路网系统旅行时间最小化为目标的路网可控制性评估模型,最后,通过数值算例对模型进行了验证.结果表明,提出的模型是可行的、有效的. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(8):1204-1226
Real road vehicle tests are time consuming, laborious, and costly, and involve several safety concerns. Road vehicle motion simulators (RVMS) could assist with vehicle testing, and eliminate or reduce the difficulties traditionally associated with conducting vehicle tests. However, such simulators must exhibit a high level of fidelity and accuracy in order to provide realistic and reliable outcomes. In this paper, we review existing RVMS and discuss each of the major RVMS subsystems related to the research and development of vehicle dynamics. The possibility of utilising motion simulators to conduct ride and handling test scenarios is also investigated. 相似文献
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借助Leray-Schauder(非线性抉择)定理,对抽象空间中一类一阶脉冲泛函微分系统适度解的可控性问题进行了研究.所得结论对相关文献的已知结果进行了推广和改进. 相似文献
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介绍了在VC＋＋中调用MATLAB的几种典型方法，重点阐述了引擎调用，以及VC＋＋中环境的设置．在研究多元有理函数域F（z）上RLC电网络的结构性质时，要建立其状态方程和能控（观）性矩阵，就要用到符号矩阵的运算．文中通过实例来说明调用MATLAB符号工具箱来进行符号矩阵的运算和利用MATLAB自身的编辑器来处理数据的方法和优势． 相似文献
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Daniel Wanner Maria Kreußlein Bruno Augusto Lars Drugge Annika Stensson Trigell 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2016,54(10):1345-1361
This research work studies the impact of single wheel hub motor failures on the dynamic behaviour of electric vehicles and the corresponding driver reactions. An experimental study in a moving-base driving simulator is conducted to analyse the influence of single wheel hub motor failures for motorway speeds. Driver reaction times are derived from the measured data and discussed in their experimental context. The failure is rated objectively on the dynamic behaviour of the vehicle and compared to the subjective evaluation. Findings indicate that critical traffic situations impairing traffic safety can occur for motorway speeds. Clear counteractions by the drivers had to be taken. 相似文献
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应用支持向量机的船舶操纵运动响应模型辨识 总被引：1，自引：0，他引：1
建模是评估船舶操纵性和可控性的重要前提.基于自由自航船模试验的系统辨识方法是求取船舶操纵运动数学模型中的水动力系数的有效手段之一.文中提出了一种使用支持向量回归估计的船舶操纵运动响应模型辨识方法,该方法通过训练自由自航试验数据样本得到参数回归模型.辨识和仿真结果验证了文中所提出的方法的有效性. 相似文献
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