The Simulation Research Of Mass Transit Vehicles Movement

Urban mass Transit is a main part in a city popular transit that is usually directed to subway and light track. The accurate simulation to the movement of the Mass Transit Vehicles is the basic require to satisfied the request of transport and manage the system of Urban mass Transit, the chief work of traction calculate is to work out the result of a train moves in different conditions and assess it exactly and rapidly.Traction calculate includes run calculate and brake calculate. Traction calculate analyses every phenomenon and theories, and solves many problems of the train in transport and design, also include the technical and economical problems. The calculate treats of the ability and safety of transport.The "Mass Transit Vehicles Movement Simulation" is chiefly depends onAv the theory of â–³s=s₂-s₁=â–³v/(ξ·c_D)V_p thereinto, As is the distance change incourse of velocity change â–³v, v_p is the average velocity to â–³v, c_p is the unit composition of forces to v_p. Customarily we define the Av as the integralvariable, but at the same time , there is a problem, when the train moves in uniformity velocity, the cp tends to zero, so As changes much when Avchange little, that will make the result of calculate imprecisely. I will define the A/ as the integral variable and that will solves the problem above.In this thesis the model of the train is improved single particle model. Improved single particle model is a model that is close to the fact . Improved single particle model does not request to predigest the data of ramp and curve, and the method can calculate several variables at the same time.Multiple particle model distributes resistance according to the train's length on the lines proportionally so that can avoid the disadvantage of single particle model. Multiple particle model can make c_p not to jump change when the trainpass the point of the node that connects two diverse ramp or curve and the result is continuous.