Adhesion control system for motor train unit

Abstract

The invention discloses an adhesion control system for a motor train unit. A system for determining slip velocity of a wheel set of the motor train unit is used for carrying out information fusion and reconstruction on obtained wheel set linear velocity, train body velocity and train body accelerated velocity through an improved Sage-Husa self-adaptive Kalman filtering algorithm, judging the train body velocity, the train body accelerated velocity and the wheel set linear velocity, filtering electromagnetic interference of a sensor signal and uncertain mechanical interference through online estimation of measurement noises, obtaining accurate filtered train body velocity and using the filtered train body velocity as a reference velocity for calculating the slip velocity. The adhesion control system for the motor train unit, disclosed by the invention, is advantaged in that the system is conductive to a motor train unit control method using the slip velocity as an important parameter; and the control effect is improved.

Description

technical field [0001] The present invention relates to the technical field of rail transit, in particular to a system for determining the creep speed of a wheel set of an EMU, and also to an adhesion control system with the above-mentioned creep speed determination system. Background technique [0002] The EMU has brought people a fast and comfortable way of travel, making the communication between cities and people closer. The adhesion between the wheel set and the rail of the EMU is the direct driving force for the EMU to move forward, and the adhesion control is an important part of the traction control system of the EMU. [0003] When the EMU is in the traction condition, if the motor torque exceeds the maximum allowable adhesion between the current wheel and rail, the wheelset idling and sliding will occur, resulting in serious wheel and rail abrasions. The creep speed of the wheelset is an important information to determine the effectiveness of sticking control. How...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in the existing adhesion control system for EMUs, the influence of obtaining accurate creep speed on adhesion control is not considered, and the creep speed of the wheel set cannot be accurately obtained, so that the Accurately capture the time point of the idling and sliding event of the wheel set of the EMU, which seriously affects the effect of adhesion control, so that the EMU cannot fully exert the maximum adhesion force

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