A Parameter Calibration Method of Traffic Simulation Software

Abstract

The invention discloses a parameter correction method for traffic simulation software and belongs to the technical field of parameter correction. According to the method, parameter correction is performed on simulation software; a simulation network is built with Paramics according to actual road conditions; travel time and traffic actually measured and respective ranges are entered as correction basis; the simulation software automatically calls a program to calculate the number of times of initial evaluation simulation, and simulation is performed to determine whether the simulation software requires parameter correction or not; if correction is required, the program analyzes sensitivity of simulation model parameters to correct the parameters that have significant influence; an optimal parameter combination is retrieved by means of a genetic simulated annealing algorithm; a Modeller module is automatically called for simulation; after simulation, data is statistically counted and compared to actually measured data; if errors are unsatisfactory, simulation is performed again after automatic parameter adjustment until the errors are satisfactory, and optimized parameters are output. The method has the advantages that simulation effect is more practical and obtained results are more significant to application and practicality.

Description

technical field [0001] The invention relates to a parameter correction method of traffic simulation software, and belongs to the technical field of parameter correction. Background technique [0002] With the development of social economy, the traffic volume of cars, especially the traffic volume of private cars, increases rapidly, and the traffic demand increases with the rapid increase of traffic volume of motor vehicles. With the growing demand, whether it is a big city or a small and medium-sized city, the contradiction between traffic supply and demand is sharpening, and traffic congestion is becoming more and more serious. A series of traffic problems such as inefficient traffic operation, frequent traffic safety accidents, and vehicle exhaust pollution have become the concerns of citizens and even become important factors restricting urban development. In order to alleviate urban traffic congestion and improve the efficiency of the traffic system, a corresponding tra...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of using default parameter values ​​to carry out traffic simulation that cannot accurately simulate traffic flow conditions, the present invention provides a parameter correction method for traffic simulation software: specifically comprising the following specific steps:

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