A Synchronous Tracking Control Method for EMUs Based on Distributed Model

Abstract

The invention discloses synchronous tracking and controlling method for a motor train unit based on a distributed model, which aims at the structural characteristic that the motive power distributed motor train unit is composed of a plurality of mutually coupled traction / brake control units. The method is based on motor train unit running process data and a traction / brake characteristic curve, utilizes modeling approach of data driving to build a motor train unit running process distributed model, and adopts a subspace method to identify, so as to obtain a model parameter. The invention provides the synchronous tracking and controlling method for the motor train unit based on the distributed model, so as to obtain an accurate control quality, and allow the running speed of each unit of the high-speed motor train unit to track the target curve accurately, achieve high-precision synchronous tracking control for each unit during high-speed motor train unit running process, and guarantee the motor train unit to run on time, safely, and efficiently. The method is simple and practical, and is suitable for high-speed motor train unit running process modeling and synchronous tracking control.

Description

technical field [0001] The invention relates to a distributed modeling and high-precision synchronous tracking control method for each unit in the running process of a train set, and belongs to the field of modeling and speed synchronous tracking control in the running process of a train set. Background technique [0002] Compared with ordinary medium and low-speed diesel trains and other means of transportation, EMUs have obvious advantages such as high operating speed, low fuel consumption, safety and reliability, and improved passenger comfort, which alleviates the current situation of shortage of transportation resources in my country to a certain extent. The train operation control system is the guarantee for the safe operation of the EMU. It is of great significance to study the dynamic characteristics of each power unit of the EMU and the corresponding control methods. The power distributed EMU is generally used in China. Compared with the centralized EMU, the power d...

AI Technical Summary

Problems solved by technology

However, the operation process of high-speed EMUs is a complex multi-variable, nonlinear dynamic system, and it is difficult for the PID algorithm to obtain ideal results.

Based on fuzzy control, expert system and robust adaptive control and other intelligent control algorithms for the train operation process, it has achieved better control effects than PID, but the fuzzy control method and the expert system control method are mainly to simulate the actual experience of experts. When the environment changes or is subject to random disturbances, it is difficult to adjust online; the robust adaptive controller is designed from the perspective of global stability and ignores the system dynamic performance

In addition, the above control method is mainly applied to ordinary speed trains such as urban rail transit, and less involved in the operation control method of EMUs

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