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A correction method of underlying model parameters of micro-traffic simulation software

A micro-traffic simulation and model parameter technology, applied in the field of traffic environment engineering, can solve problems such as high technical requirements, complexity of genetic simulated annealing algorithm, traffic engineering is not applicable, and simulation software cannot be very friendly to support secondary development, etc.

Inactive Publication Date: 2017-11-07
ZHEJIANG UNIV
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Problems solved by technology

But it also has the following deficiencies: a). Simulation software limitations
Secondary development is required for a certain traffic simulation software, which requires high technical requirements, and there are many simulation software that cannot support secondary development very well.
b). The complexity of the genetic simulated annealing algorithm is not suitable for traffic engineering

Method used

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  • A correction method of underlying model parameters of micro-traffic simulation software
  • A correction method of underlying model parameters of micro-traffic simulation software
  • A correction method of underlying model parameters of micro-traffic simulation software

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Embodiment Construction

[0077] The present invention will be further analyzed in conjunction with the accompanying drawings.

[0078] Such as figure 1 As shown, the present invention is mainly divided into two steps. The first step (steps 1-4) is to collect uncontrollable parameters of traffic objects, real index data, and determine the range of parameters to be corrected. The second step (steps 5-9), such as figure 2 As shown, the three types of information are input into the microscopic traffic simulation software, the road network is built and the software bottom model parameter correction process is implemented. The detailed steps are as follows:

[0079] Step (1). Collect uncontrollable parameters of traffic objects in the field area to be measured;

[0080] The selection criteria of the field area to be tested is that the area is an important vehicle traffic road carrying the urban area, and the path length is generally 3-10km, passing 5-20 intersections.

[0081] In the embodiment of the present i...

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Abstract

The invention discloses a bottom model parameter correction method of microscopic traffic simulation software. The road network in traffic simulation software is established by collecting uncontrollable parameters of traffic objects in the area to be tested. After determining the range of the parameter set to be corrected, a small number of simulation parameter scheme sets are selected for simulation in the road network by citing Latin hypercube sampling, and the simulation index data is compared with the real index data to select the optimal parameter scheme. Through the simulation software, the selected optimal parameter scheme is subjected to regression simulation to verify the credibility of the optimal parameter scheme. The method of the invention is simple, easy to operate, and has high correction precision, and can provide credible simulation experiment conclusions for the scientific research of traffic engineering, traffic signal light control or traffic control.

Description

Technical field [0001] The invention belongs to the technical field of traffic environment engineering and provides a method for correcting the underlying model parameters of microscopic traffic simulation software. The method is applied to commercial microscopic traffic simulation software that has not corrected the underlying model parameters, such as Aimsun, Transmodeler, Vissim, Paramics and so on. Background technique [0002] With the continuous development of my country's national economy and automobile industry, the number of vehicles in urban areas has grown rapidly, and the main road services that carry traffic are stretched. Microscopic traffic simulation software gives researchers and traffic managers an important means to judge (verify) whether the new traffic management strategy is effective: implant the new management strategy into the simulation software, run the simulation, and learn about the management strategy through the software's index data The pros and con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/455
Inventor 王绍楠王慧
Owner ZHEJIANG UNIV
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