Distributed Hierarchical Control for Railway Passenger-Dedicated Line Intelligent Transportation System Based on Multi-Agent

Abstract

Through detailed analysis of control problem of railway passenger-dedicated line intelligent transportation system, a distributed hierarchical control method was proposed by blending the factitious division of hierarchical system and the natural division of distributed control system. This method is based on the hierarchical control theory of large scale system, and includes three levels: the organization level, the coordination level, and the execution level. The objectives are decreasing the total delay time and increasing the absorption to passengers of the successive trains, a method for train operation adjustment based on Multi-Agent is developed, and the control strategy based on rules is proposed. The distributed hierarchical control method deals with the train planning, the coordination of trains, and the action control of trains in different layers. The organization level responds to the real-time changing transport demands and determines the planning orders of the trains, the coordination level is used to resolve the underlying conflicts between trains in the system, and the execution level is used to control the action of the trains. The simulation results show the effectiveness of the model and the revised algorithm based on Multi-Agent comparing with the traditional control theory.