Braking force management method for urban railway vehicles based on tcms distribution of braking force

Abstract

The invention belongs to the technical field of urban railway vehicle control, and relates to an urban railway vehicle braking force management method distributing braking force based on TCMS. According to the management method, electric braking force is used preferably, air braking serves as the supplementary for insufficient braking force, electric braking is in real-time coordinated matching with air braking, air braking is not used under the situation that the electric braking capability is enough, and the purposes that energy is fed back to a power grid to the maximum degree, and abrasion of a shoe is greatly reduced are achieved. When the electric braking capability is not enough, the air braking is preferably supplemented to a trailer and a motor vehicle with the electric braking fault, and after the maximum adhesion is reached, the purposes that the air braking is averagely supplemented on the motor vehicle with the normal electric braking, the average distribution of braking force for all vehicles is achieved, the interaction force among the vehicles is reduced, and the service life of the vehicles is prolonged are achieved. In the braking process and the starting process, the applying of the braking force is linearly controlled according to the whole vehicle impulsion limiting requirement, the vehicle impulsion is reduced, and conversion among traction force, electric braking and air braking is smooth.

Description

technical field [0001] The invention belongs to the technical field of urban railway vehicle control, and relates to a braking force management method for urban railway vehicles based on TCMS (Train Control and Monitoring System) distribution of braking force. Background technique [0002] At present, in the braking force management strategy of urban railway vehicles, the braking system (such as EP2002) usually performs the calculation and distribution of the braking force demand of the whole vehicle. This management method controlled by the braking system evenly distributes the electric braking force of each vehicle, and cannot coordinate the work of the three major train systems of TCMS, braking system, and traction control system (DCU), and cannot meet the requirements of maximizing the electric braking capacity. There are also problems such as excessive train impulse during ramp start and frequent supplementary air brakes. Contents of the invention [0003] In order t...

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Problems solved by technology

[0003] In order to solve the technical problems existing in the existing urban railway vehicle braking force management methods such as excessive train impulse, excessive wear of brake shoes and frequent supplementary air brakes caused by improper cooperation between the traction system and the braking system during the braking and starting process, this paper The invention provides a braking force management method for urban railway vehicles based on TCMS distribution of braking force, which calculates the braking force demand of the whole vehicle through TCMS, distributes the electric braking force of each motor vehicle, and controls and maintains braking application / release

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