INTEGRATED CONTROL OF HIGH SPEED RAILWAY

Abstract

The article is devoted to the choice of a new model of control for high speed transport which is based on its definition in the space of parameters. It studies application of traffic schedule patterns and compares interval parameters of a real positioning of a transport object with a sample situation, set by schedule. The author suggests the ways how to use the described model to analyze and control intelligent transport system.

Classical digital models of moving objects are computed on the basis of the coordinates in the point of their current situation. It means that such models, once they are applied for geoinformatics and transport, contain information on coordinates only and are determined in real 3D space. Temporal referencing of coordinates exists only as a form of recording of the time of measuring of a spatial point where the object is situated.

The control, based on such approach, includes evaluation of the features of an object in a given point and decision making referred to such a point. While when high speed traffic is concerned, such an approach delays analysis of a situation, causing growing risks of object vulnerability and incorrect decisions. In order to overcome such a default the author suggests using integrated control, based on a new type of digital models. Such digital model should be determined not only in the space of coordinates, but in a more capacious space of parameters including coordinate, speed and acceleration data.

The second feature of the new model consists in the interval character, the models are determined not for a point but for a certain interval of evaluated values «from… till…» for distances, speeds, and accelerations. The third feature supposes simulating of reference sample interval model of traffic according to traffic schedule of a rapidly moving object, that represents a set of mask (allowable intervals of distances, speeds, accelerations). Control is accomplished via comparison of real digital interval traffic model and of reference interval traffic model.

Such an approach is a development of the ideas оf integrated control of transport objects but the described dynamic model includes moreover geoinformatics data of interval variables and a sample system. Methodologically the suggested approach develops ideas of situation control of transport objects or of control under unforeseen circumstances.