Vehicle Modeling Of Multi-Agent Micro Traffic Simulation In HLA Framework

Computer simulation makes use of computers to take experiments on simulation model of really system, and it's one of the main methods and powerful tools to take science research and solve the practical problems. Traffic simulation is the significant application in traffic engineering field of computer simulation technology, and it's the technology to re-display the time and space change of traffic stream. With the rise of traffic theory research, the rapid development of computer hardware and software and the driven by the social requirement, the research of traffic simulation, especially microscopic traffic simulation, has won great success.But the research of microscopic traffic simulation in our country is still at start stage, and it's often restricted to solve simplex problem, but not the establishment of simulation framework and Agent modeling, and it only thinks much of theory research but not attaches importance to solving the practical problem in project. To these questions above, based on the introduction of research background and the analyses of relative technology in microscopic traffic simulation, this paper located the main research content at:1. Propose the model of road partition, SGRP(Shanghai Grid Road Partition), which is based on Multi-Agent system(MAS), and analyze the interaction relationship of agents in microscopic traffic simulation. Propose the framework of microscopic traffic simulation, SGMTSF(Shanghai Grid Microscopic Traffic Simulation Framework), and this framework has both the characteristic of HLA simulation framework and MAS, specifies the communication method and time advance strategy, and provides the framework-layer guidance for microscopic traffic simulation.2. Propose the agent model, SGGBAM(Shanghai Grid General BDI Agent Model). This model makes use of BDI thinking to construct the structural model and simplifies the modeling work of simulation agent.3. Introduce some typical vehicle behavior model, for example, vehicle-following model, lane-changing model, path-finding model and so on, and based on which propose the whole behavior framework of vehicle agent, SGVBF(Shanghai Grid Vehicle Behavior Framework). This framework provide basis for vehicle modeling in microscopic traffic simulation. Then analyzes the vehicle-person interaction model of bus agent as complement to make it more integrated.4. Introduce some implement technology, for instance, how to take simulation development with Jade simulation platform, how to implement the development of BDI Agent, and how to improve system performance with the skill of local information sharing, which provides reference for development of microscopic traffic simulation project.