搜索结果: 1-15 共查到“交通运输工程 optimization”相关记录22条 . 查询时间(0.194 秒)
Modeling, monitoring and optimization of discrete event systems using Petri nets
Discrete Event Systems Petri Nets Traffic Systems Sensor Networks Fault-Tolerant Control
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2015/1/20
Yan, Jiaxiang. M.S.E.C.E., Purdue University, May 2013. Modeling, Monitoring and Optimization of Discrete Event Systems Using Petri Nets. Major Professor: Lingxi Li. In last decades, the research of d...
Solving the nonlinear transportation problem by global optimization
nonlinear transportation problem network flows global optimization nonlinear programming (NLP)
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2010/10/29
The aim of this paper is to present the suitability of three different global optimization methods for specifically the exact optimum solution of the nonlinear transportation problem (NTP). The evalua...
Transit Network Optimization–Minimizing Transfers and Optimizing Route Directness
Transit Network Optimization–Minimizing Transfers Optimizing Route Directness
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2009/10/19
This paper presents a mathematical methodology for transit route network optimization.
The goal is to provide an effective computational tool for the optimization of
large-scale transit route networ...
Large-Scale Transit Network Optimization by Minimizing User Cost and Transfers
Large-Scale Transit Network Optimization Minimizing User Cost Transfers
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2009/10/19
This article proposes a methodology for developing optimal transit networks (route
structures and headways) that minimizes transit transfers and total user cost while
maximizing service coverage, gi...
More Passengers and Reduced Costs—The Optimization of the Berlin Public Transport Network
Reduced Costs Optimization Berlin Public Transport Network
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2009/10/16
The Berliner Verkehrsbetriebe (BVG) has succeeded in increasing its revenue by
more than 22 percent in three years. This was made possible by restructuring the
transportation network as part of an i...
Plug-in混合动力汽车能量管理策略优化设计（Optimization of Plug-in Hybrid Electric Vehicle Energy Management Control Strategy）
Plug-in混合动力汽车 能量管理策略 优化
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2009/9/25
应用PSAT前向仿真软件及矩阵分割全局优化算法，对并联式Plug-in混合动力汽车（PHEV）在不同电能消耗续驶里程（CDR）下的能量管理策略进行了优化设计研究。结果表明：PHEV电能消耗续驶里程越大，优化控制参数对整车经济性影响越小；小CDR优化控制参数的整车平均经济性能好于大CDR优化控制参数；利用优化设计得到的PHEV能量管理策略可以使整车平均等价油耗降至2.70 L/(100km)，相对于...
混联型混合动力汽车能量管理策略优化（Optimization of Energy Management Strategy for a Parallel-series HEV）
混合动力汽车 能量管理策略 优化
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2009/5/22
对一种混联型混合动力系统运行工况进行了分析。基于发动机、电机和蓄电池的效率图，建立了混联型混合动力汽车充电工况和放电工况的系统效率模型。放电工况以系统放电效率最大为优化目标，充电工况根据蓄电池荷电状态不同，分别以系统充电效率最大、系统充电效率与充电功率乘积最大为优化目标，对混合动力系统能量管理策略进行了优化研究，获得了 汽车在不同运行条件下的发动机、电动机和发电机的最优控制转矩及转速。燃油经济性仿...
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
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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。
汽车悬架参数的多目标多标准决策优化（Multi-objective and Multi-criteria Decision Optimization of Automobile Suspension Parameters）
汽车 悬架系统 多目标优化
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2009/5/22
为了改善汽车行驶的舒适性、安全性并减小轮胎动载对路面的破坏，以某载货汽车的四自由度悬架系统为研究对象，将车速分别为50、80和100km/h在A、B和C级路面行驶的车身垂直加速度、前后轮胎动载荷的统计均方根值作为目标，用多目标遗传算法和多标准决策方法进行了优化。结果表明：车身垂直加速度均方根值平均减小了40%，前后轮动载荷均方根值平均减小了30%，性能有较大改善，并且采用后期多标准决策方法，可以同...
Optimization problems in designing automobiles
mathematical model optimization automobile design system approach
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2010/11/1
A mathematical model of optimization problems in designing automobiles is suggested and requirements raised are defined taking into account the main technical and economic characteristics of the autom...
Optimization of loading facilities at the terminal
cost of transportation vehicle’s capacity stock management
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2010/11/1
The problems of stock management and proper choice of transport facilities are defined and analysed taking into account the relationship between cost of transportation and vehicle’s capacity and size ...
Linear optimization model of urban areas’ operating efficiency
urban transportation urban planning transportation policy linear programming optimization
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2010/11/1
The efficiency of urban transportation is getting more and more important because of the increasing rate of mobility demand. To plan, control and organize urban transportation in the most efficient wa...
Methods for optimization of rotational latency of the inverse loading of trucks on international routes
international transportations automobile vehicles return loading waiting time optimization specific profit
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2010/11/2
The increase of the efficiency of international car transportation of cargoes is an actual problem. For the solution to delivery problems at present the information systems on the basis of INTERNET-te...
The optimization of loading facilities at the terminal
loading equipment time of vehicle’s turnover organization of freight transportation
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2010/11/2
In freight transportation, when a cargo is carried from one terminal to some others (or from several terminals to one area), the delay time of vehicles and loading equipment may be considerable becaus...
Optimization of technological processes at the terminal
terminal technological interaction interaction point
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2010/11/2
The reliability of terminal operation is analysed by statistical methods based on the collected statistical data. Major estimates are made on a specified credibility level (probability). When the term...