Control method and control system for real-time speed tracking of urban railway train

Abstract

The invention relates to a control method and a control system for real-time speed tracking of an urban railway train. The control method comprises the following steps of: sequentially taking all speed values in a preset speed track as the target value of a controlled speed input to a fuzzy controller; determining the discourse domain of the input linguistic variables of the fuzzy controller, the fuzzy set of the linguistic variables and the discourse domain of output variables; creating a fuzzy rule table related to the output variables; correcting the input parameters of a PID controller by virtue of the output variables of the fuzzy controller; adjusting the current speed information of the urban railway train, which is acquired in real time by virtue of the output parameters of the PID controller, so as to obtain the adjusted speed information; controlling the urban railway train to run according to the adjusted speed information. The control process of the control method and the control system disclosed by the invention is finer, adaptability and robustness are improved, a reasoning process is fast, lots of complex calculation is not required, and requirements on hardware are low.

Description

technical field [0001] The invention relates to an automatic control method for urban rail traffic, in particular to a real-time speed tracking control method and system for urban rail trains. Background technique [0002] With the continuous acceleration of urbanization in our country, the scale of cities is getting larger and larger, and the urban population is increasing. The existing urban transportation network has been difficult to meet the requirements of urban development. my country urgently needs to independently build a high-efficiency rail transit system to alleviate the increasingly severe urban traffic problems. How to increase the transport density of trains, increase the speed of trains, and improve the quality of train operation has always been an important problem faced by the development of my country's railway industry. For the above-mentioned rail transit requirements, the adoption of advanced automatic train control (ATC, Automatic Train Control) techn...

AI Technical Summary

Problems solved by technology

[0006] The train automatic driving system is affected by the train mechanical structure, the electric drive system and the speed requirements proposed by the ATP. The PID controller based on the traditional control theory can no longer adapt to the nonlinear and time-varying characteristics of the train operating parameters, and it is difficult to reflect the real situation. The smoothness of speed control is destroyed, and the frequent switching of traction and braking affects the comfort requirements of the system, and also affects the efficient operation and parking accuracy of the train

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