On-line predictive control method of traffic bottlenecks based on field programmable gate array (FPGA) and improved Papageorgiou-E model

A technology of predictive control and model, applied in the field of FPGA control

A technology of predictive control and model, applied in the field of FPGA control

CN102945609AActive Publication Date: 2013-02-27XIAN FEISIDA AUTOMATION ENG
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  • On-line predictive control method of traffic bottlenecks based on field programmable gate array (FPGA) and improved Papageorgiou-E model
  • On-line predictive control method of traffic bottlenecks based on field programmable gate array (FPGA) and improved Papageorgiou-E model
  • On-line predictive control method of traffic bottlenecks based on field programmable gate array (FPGA) and improved Papageorgiou-E model

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Embodiment Construction

[0026] Refer to attached figure 1 , 2 Describe the present invention in detail.

[0027] The flow chart of the control method of the present invention is attached figure 2 As shown, in the case of no traffic bottleneck, the control scheme is a variable display board to display the free flow speed allowed by the road, and the turn control does not limit the input and output. The display board shows the speed and the turn control plan predicts the traffic flow density, traffic flow and average vehicle speed of each road section for a period of time T c (T c take T 0 , T 1 If there is no traffic bottleneck, use the current control scheme for regulation. If there is a bottleneck, adjust the display speed of the variable display board and the turn control scheme according to the aforementioned priority principle. and continue to predict for some time T c , if the traffic bottleneck cannot be removed, continue to adjust the control scheme until a control scheme is found that ...

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Abstract

The invention discloses an on-line predictive control method of traffic bottlenecks based on an FPGA and an improved Papageorgiou-E model, and aims to solve the technical problem that on-line predictive control is difficult to perform on the traffic bottlenecks on actual highways or blocked roads in the existing method. According to the method, the Papageorgiou-E model is improved, a variable information display board is integrated into the Papageorgiou-E model, predictive analysis is performed on highways or blocked roads based on an FPGA platform and the improved Papageorgiou-E model, the traffic bottlenecks are found according to a defined state variable, and then control schemes of ramp control and the variable information display board are provided and taken to prediction models according to priority to find reasonable control schemes to perform on-line control on the traffic bottlenecks, so that the traffic bottlenecks on the actual highways or blocked roads can be effectively controlled.

Description

technical field [0001] The invention relates to an FPGA control method, in particular to an online traffic bottleneck prediction control method based on the FPGA and an improved Papageorgiou-E macroscopic traffic flow model. Background technique [0002] Traffic congestion has become the focus of common attention of all countries in the world and an important problem that needs to be solved urgently. The traffic bottleneck problem is one of the most important problems restricting traffic flow. Due to the limitation of hardware facilities or the impact of emergencies, some sections of the road become If the bottleneck is not regulated, it will accelerate the accumulation of traffic in the bottleneck section, worsen the traffic condition, cause congestion, and even lead to the paralysis of the entire transportation network. [0003] At present, there are only two ways of expressway traffic regulation: variable information display boards for speed limit and turn control. In ord...

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Application Information

Patent Timeline
27 Feb 2013
Publication
CN102945609A
IPC
G08G1/08; G06Q10/04; G06Q50/30
Inventors
史忠科; 刘通