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Valuing a Road Network Improvement using Stated Preferences Methods
Road endowments valuation Transport improvements appraisal Stated preferences methods
2009/9/28
In this paper we address, from a double perspective, the social valuation of transport improvements caused by the construction of a new motorway. First, we estimate the value citizens confer on this i...
LIN总线的动态调度算法设计与应用（Dynamic Scheduling Algorithm for Local Interconnect Network and Its Application）
车辆 车载LIN总线 动态调度
2009/5/22
提出了一种用于设计LIN网络消息时序的动态调度算法。针对LIN网络主从式的通信模式，提出了逆向负载率和正向负载率，用于分析系统的可调度性，然后基于基本时间片和系统矩阵，将正向消息作为事件型消息，将逆向消息作为周期型消息进行动态调度。该算法使得在逆向负载率较小的情况下，正向转发消息的时效性大大提高；网关设计更加灵活，能适应不同的正向消息到达率，在使用CAN/LIN混合网络传输时，网关将具有更加良好的...
基于神经网络的空气悬架系统匹配优化（Neural Network Optimization on Matching of Air Suspension System）
汽车 空气悬架 阻尼 匹配
2009/5/22
建立了空气悬架双质量模型，提出了基于RBF神经网络优化的系统阻尼和空气弹簧匹配的优化方法。匹配求优时，选取车身加速度和轮胎动载荷加权和最小值为优化目标，以悬架动行程最大值为约束。仿真结果表明，客车的平顺性和轮胎接地性都得到改善。台架试验与仿真结果基本吻合。
基于遗传算法和神经网络的车辆主动悬架控制技术（Control Technology of Vehicle Active Suspension Based on Genetic Algorithm and Neural Network）
车辆 主动悬架 神经网络
2009/5/22
采用遗传算法与神经网络相结合的控制策略，以四自由度车辆主动悬架半车模型为仿真对象，与传统的被动悬架进行控制性能比较。通过改变神经网络训练参数、遗传算法输入函数以及车速，对系统的响应特性进行了分析。结果表明车辆主动悬架控制策略可以减小车辆的振动，改善车辆行驶平顺性。
Estimation of Vehicle Flows and Emissions for Various Scenarios of Street Network Modifications in Mexico City
Metropolitan network vehicle flow emission road infrastructure
2008/12/26
We estimate flows and emissions (NOx, HC, CO) generated by vehicles circulating on the main streets of the Mexico City Metropolitan Area. The estimation is made for various scenarios, which include a ...
Model for distribution of warehouses in the commercial network in optimising transportation of goods
warehouses commercial network goods transportation price road transport freight the simulation procedure of optimizing
2010/11/1
A model for distribution of warehouses in the commercial network in optimising transportation of goods has been established. The target function in the model includes: fixed prices for construction of...