Research On Ship Traffic Flow Simulation Based On Anylogic And Multi-agent

With the shipping industry development,the form of traffic flow in the port has become increasingly complex.The original facilities and management regulations in the port have gradually failed to adapt to the changes brought about by the development of traffic flow,resulting in the phenomenon of ship demurring and lay time in port,reducing the operational efficiency of the port.Therefore,the study of the evolution law of traffic flow is especially necessary.Because the evolution of port traffic flow is affected by many random factors,it has the characteristics of non-linearity and complexity.Therefore,compared with traditional research methods that rely on linear logic structure and step-by-step calculation of complex mathematical models,simulation technology is a more effective method.In addition,the application of simulation technology in port research focuses on solving problems such as land collection and distribution,berth design and channel passing capacity.The research on the evolution of port traffic flow that involves multi-factor simulation is relatively lacking.Based on the above background,this paper fully considers the conditions of tides,berths and anchorages,ship safety spacing,ship arrival rules,ship priority,ship speed and navigation restriction rules,establishes a simulation model for simulating port ship traffic flow relying on the Anylogic simulation platform and utilizing the multiple-agent modeling method.The main research contents are as follows:(1)Analyzes the commonly used traffic flow simulation model and traffic flow simulation software,and explains the reason why the agent simulation method and Anylogic simulation platform are selected in this paper.(2)With the reference to Xiamen Port,summarizes and analyzes the navigation process of the port ship and determines the port simulation elements and designs the simulation logic flow based on the above results.The logic includes the ship’s entry and exit logic flow,the large ship navigation mechanism and other navigation restrictions rules,and ship production rules.(3)Constructs this model based on Anylogic and multi-agent ship traffic flow simulation model.This process includes creating a visual base map,designing a model control,implementing a simulation model function module based on the Java language,and setting the agent communication mechanism.(4)Data collection and processing.The basic data of Xiamen Port’s traffic flow was obtainedthrough the Xiamen Pilot Station Survey,the Port Statistical Yearbook,the Xiamen Port Bureau Annual Work Conference Report and the Xiamen Port Automatic Identification System(AIS)data collection.This paper analyzes the data statistics and the composition of Xiamen Port’s traffic flow,calculates the ship’s arrival law and the probability function obeyed by the time between ships,calculates the time of each ship’s berth,determines the tidal law and the ship speeds for different segments.(5)Verifies the model with Xiamen Port as an example.Determines the simulation boundary,sets the basic parameters,then carries out the simulation experiment,sorts and analyzes the experimental results.The evolution law of ship traffic flow obtained by simulation experiment is basically similar to the actual one.The average error between the simulated traffic flow and the actual port traffic flow is about 5%.The model established in this paper is reliable.