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11th International Conference on traffic and Transportation Studies, ICTTS 2024

作者： Du, Xinyi Zhang, Yaqin Wang, Li School of Traffic and Transportation Beijing Jiaotong University Beijing100044 China Institute of Computing Technology China Academy of Railway Sciences Corporation Limited Beijing100081 China Beijing Engineering Research Center of Urban Traffic Information Intelligent Sensing andService Technologies Beijing100044 China Key Laboratory of Railway Industry for Operational Active Safety Assurance and Risk Prevention and Control Beijing Jiaotong University Beijing100044 China

ISBN: (纸本)9789819796397

The "one-bill coverage" of China-Laos railway multimodal transport is an effective way to promote the growth of bilateral trade between China and Laos railways, and it is an inevitable requirement for the construction of a modern comprehensive transport system. In order to enhance the efficiency and economic benefits of cargo transport on China-Laos Railway, this paper combines the current situation of freight transport on China-Laos Railway and divides the life cycle of "one-bill coverage" of China-Laos Railway multimodal transport into five phases: order submission, domestic consolidation, cross-border transport, foreign evacuation and order signing, etc., and builds a "one-bill coverage" covering all the links, such as loading, transport, transshipment, warehousing, connecting, and customs clearance. This paper can provide a reference for the development of "one-bill coverage" transport service of China-Laos Railway multimodal transport. © beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Multimodal transportation

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Multi-objective Optimization Study of Electric Heavy Truck Composite Braking System Based on IVY Algorithm

Multi-objective Optimization Study of Electric Heavy Truck C...

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International Conference on Artificial Intelligence and Autonomous Transportation, AIAT 2024

作者： Ma, Zhenliang Yang, Xiaopeng Wang, Falong Liu, Yi Chen, Chang Meng, Xianglin Gao, Mengqi Han, Xiangbo Beijing Key Laboratory of Intelligent Control Technology for Urban Road Traffic North China University of Technology Beijing100144 China China North Vehicle Research Institute Beijing100071 China Anhui Ankai Automobile Co. Ltd Hefei230000 China Beijing Institute of Technology Beijing100081 China Jiangsu Industrial Innovation Center of Intelligent Equipment Co.Ltd Liyang213300 China School of Mechanical Engineering Nanjing University of Science and Technology NJUST Jiangsu210094 China

ISBN: (纸本)9789819639687

With the wide application of electric heavy trucks in the field of urban logistics and transportation, the problems of low energy recovery rate and poor braking sensation are becoming more and more prominent. For this reason, this paper proposes a multi-objective optimization research method based on IVY algorithm for electric heavy truck composite braking system. Firstly, according to the characteristics of the electric heavy truck composite braking system, the energy flow process of the composite braking system is analyzed, and the pneumatic brake and motor regenerative braking models are constructed. Secondly, the comprehensive evaluation model of system performance was established by taking braking sensation, energy recovery and loss as the performance evaluation indexes, and the key static parameters affecting the performance of the composite braking system and their influence laws were clarified. Finally, the Ivy algorithm IVYA is used for parameter optimization, and the optimization results are compared and analyzed with the optimization results based on the adaptive genetic particle swarm hybrid algorithm PSO-GA. The optimization results show that the optimized system parameters based on the Ivy algorithm can reduce the loss by 13.9% and increase the energy recovery rate by 20% while ensuring good braking sensation for the driver. © beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Multiobjective optimization

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Steady-State traffic Signal control With Variable Phase Combinations and Sequences

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IFAC-PapersOnLine 2016年第3期49卷 11-18页

作者： He, Zhonghe Hua, Yafei Wang, Li Beijing Key Lab of Urban Intelligent Traffic Control Technology North China University of Technology Beijing China

The space distribution of traffic flows is often unbalanced, resulting in regional congestion, and even oversaturation of the network. In this paper, the steady-state traffic signal control design approach, with consensus-based control objective of network states, is proposed. A traffic flow model is first introduced based on store-and-forward modeling procedures. Furthermore, a link-based distributed signal control law is proposed with the consensus of link occupancies as control objective, and moreover control approach for phase combinations and sequences is introduced, especially in case of higher network demands. At last, simulation investigations for a topological network in beijing are conducted in VISSIM software, which shows that the proposed approaches can improve performance indices of the network and then reduce local traffic congestion. © 2016

关键词： traffic signals Computer software Motor transportation Pollution control Street traffic control traffic congestion traffic control consensus Phase combinations sequences Steady state controls urban traffic networks

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Analysis of Multi Intersection State controllability under the Constraint of Saturation Equilibrium 6

Analysis of Multi Intersection State Controllability under t...

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2017 IEEE 6th Data Driven control and Learning Systems Conference (DDCLS’17)

作者： Li Wang Lili Zhang Min Li Haibo Zhang Beijing Key Lab of Urban Intelligent Traffic Control Technology North China University of Technology

ISBN: (纸本)9781509054626

In view of the existing regional traffic state classification method cannot completely reflect the controllable state of city road network problems, puts forward a constraint based on saturation equilibrium of multi intersection state controllability analysis model. First, the equilibrium of saturation control method to control the multi intersection;secondly, the equilibrium of saturation constraints, introducing demand rate and cumulative rate of definition of multi intersection controllability. Finally, the simulation is carried out using the actual data of the road network, the results show that the proposed algorithm can more accurately reflect the control of city road network.

关键词： Regional traffic State Identification Saturation Balance control State control Demand Rate Cumulative Rate

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Coordination control of Entrance Ramp Metering and Upstream Signal control based on CPN 28

Coordination control of Entrance Ramp Metering and Upstream ...

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第28届中国控制与决策会议

作者： Li Min Zhang Li-li Wang Li Zhang Hai-bo Li Zheng-xi Beijing Key Lab of Urban Intelligent Traffic Control Technology North China University of Technology

ISBN: (纸本)9781467397155

Mixed-control algorithm only considers about freeways and ramp without the coordination with upstream intersections of side roads,which will result the jam on the upstream intersections of side ***,this article has proposed an improved control algorithm of coordination of entrance ramp metering,freeways and upstream intersection of side roads based on the *** article has simulated this algorithm using CPN,and has proved the effectiveness of the algorithm through simulating the real road network by VISSIM.

关键词： Coordinated control of entrance ramp Mixed-control CPN and VTSSIM

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Integrated Modeling and control of urban Road traffic Networks 6

Integrated Modeling and Control of Urban Road Traffic Networ...

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2017 IEEE 6th Data Driven control and Learning Systems Conference (DDCLS’17)

作者： Zhonghe He Lingyu Zhang Haibo Zhang Xiaoming Liu Beijing Key Lab of Urban Intelligent Traffic Control Technology North China University of Technology

ISBN: (纸本)9781509054626

urban freeway is the aorta of urban traffic, but in recent years, traffic congestion has become prominent increasingly, which seriously affects the urban traffic efficiency. Based on the analysis of the traffic flow characteristic of urban freeway and streets system, the macroscopic traffic flow model integrated urban freeway with streets system is established, by using store-and-forward model to describe the evolution law of states for the two systems. Then on this basis, the green ratio adaptive control method based on linear quadratic optimal control is put forward. Finally, the VISSIM traffic simulation software is used to simulate and compare with the fixed-time signal control. The simulation results show the feasibility and effectiveness of the method.

关键词： Freeway urban Road Store-and-Forward Optimal control

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LQR-based Perimeter control Approach for urban Road traffic Networks 6

LQR-based Perimeter Control Approach for Urban Road Traffic ...

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2017 IEEE 6th Data Driven control and Learning Systems Conference (DDCLS’17)

作者： Haibo Zhang Lingyu Zhang Zhonghe He Min Li Beijing Key Lab of Urban Intelligent Traffic Control Technology North China University of Technology

ISBN: (纸本)9781509054626

Continuous increase of traffic demands, often more than the network capacity, is the primary reason for traffic congestion. Recently, the existence of macroscopic fundamental diagram in urban road network has been validated by many research works, and then activated the researches for the perimeter control of the network to realize objective of reducing network congestion. In this paper, the centralized state-feedback control design approach for the perimeter control of the network, with the objective of the network balance, is developed, which can realize the balance of network flows and moreover guarantee the maximum network capacity in saturated state of the network. A state-space model of the network perimeter control, with the number of vehicles in links as state variables and perimeter flows as control inputs, is first proposed. Furthermore, LQR approach is applied for the design of perimeter input. Also, the distributed signal control approach of the network under the proposed perimeter control law is proposed, realizing the integration of the perimeter and signal control of the network.

关键词： urban Road traffic Networks Oversaturation traffic Signal control Perimeter control LQR

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Real-time Queue Length Perception with Green Wave Band Point Optimization Based on Floating Vehicle 6

Real-time Queue Length Perception with Green Wave Band Point...

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2017 IEEE 6th Data Driven control and Learning Systems Conference (DDCLS’17)

作者： Li Wang Ke Pan Xingyu Wang Beijing Key Lab of Urban Intelligent Traffic Control Technology North China University of Technology

ISBN: (纸本)9781509054626

With the development of satellite positioning technology and network communication technology, the floating vehicle data has the advantages of large amount of data, high precision and wide coverage. In order to improve the green wave control effect, combines the floating vehicle trajectory data with distributed wave theory, makes the real-time prediction of queue length of current cycle and the time of complete disappearance, and analyzes the green-start coordination, green-middle coordination and green-end coordination in the advantages and disadvantages, designs an optimal control strategy with dynamic green point floating vehicle queue length based on real-time sensing green, improves the efficiency of green band, through simulation experiments to prove the effectiveness of the proposed method.

关键词： Floating Vehicle Distributed Wave The Point of Green Wave

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A Multi-mode Cooperative Adaptive Cruise Switching control Model for Connected Vehicles Considering Abnormal Communication 6

A Multi-mode Cooperative Adaptive Cruise Switching Control M...

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2017 IEEE 6th Data Driven control and Learning Systems Conference (DDCLS’17)

作者： Pangwei Wang Chuan Jiang Xiaohui Deng Li Wang Hui Deng Zhonghe He Beijing Key Lab of Urban Intelligent Traffic Control Technology North China University of Technology

ISBN: (纸本)9781509054626

With the development of vehicle-to-vehicle(V2V)/vehicle-to-infrastructure(V2 I) communication systems, the spacing between two vehicles is shortened effectively and the traffic efficiency is improved. Meanwhile, abnormal wireless communication caused by time-delay, packet-dropout and failure brings the new traffic security problem. In this paper, the connected vehicle platoons is taken as the research object. Firstly, a traditional cooperative adaptive cruise control(CACC) system is established based on distributed controller;secondly, according to the influence of abnormal wireless communication, a multi-mode switching control model is presented to improve the CACC controller;thirdly, according to the conditions of string stability, the ranges of controller parameters and constant time headway(CTH) are obtained;finally, the feasibility of the controller is simulated based on Matlab/Simulink. The test results show that the multi-mode CACC controller can not only avoid the influence of abnormal communication on intelligent connected vehicle platoon, but also ensure the string stability under the smaller driving spacing in the meantime.

关键词： Cooperative Adaptive Cruise control(CACC) Switching control Connected Vehicles Platoon control

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Study on interregional traffic coordination based on multi-objective optimization 29

Study on interregional traffic coordination based on multi-o...

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第29届中国控制与决策会议

作者： Li Min Zhang Hai-bo Wang Li Beijing Key Lab of Urban Intelligent Traffic Control Technology North China University of Technology

ISBN: (纸本)9781509046584

traffic control and route guidance is a common method for realizing area traffic ***,the travel time of local area network and intersection delay are selected as the optimization objective of the network system,meanwhile considering the constraints about capacity in boundary ***,regional internal control,induced coordination effect and coordination with cross-sub segments are abstracted into a multi-objective optimization problem,simultaneously,introducing the weighted strength parameters to reflect the different preference information of transportation decision-maker for different traffic influence on cooperative *** the paper gives a genetic algorithm solution to the problem,and then traffic simulation software Paramics is used to analyze the real-world road network in Wangjing district in *** results show that the cooperative algorithm can effectively alleviate the local traffic congestion and improve traffic operation efficiency

关键词： urban traffic multi-objective optimization genetic algorithm regional boundary control and guidance

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