Adhesion control method of motor train unit

Abstract

The invention discloses an adhesion control method of motor train units, which is a method of determining slip velocity of wheel sets of the motor train unit. The method includes the following steps: 1) with an improved Sage-Husa self-adaptive Kalman filtering algorithm, performing information fusion and reconstitution to wheel set linear speed, train body speed and train body acceleration; 2) performing mutual determination to the train body speed, the train body acceleration and the wheel set linear speed, and acquiring accurate wave-filtered train body speed by means of on-line estimation to measured noise for filtering electromagnetic interference of sensor signals and undetermined mechanical interferences; and 3) with the wave-filtered train body speed as a reference speed, calculating the slip velocity. The motor train unit control method employs the slip velocity as an important parameter, thereby improving control effect.

Description

technical field [0001] The present invention relates to the technical field of rail transit, in particular to a method for determining the creep speed of a wheel set of an EMU, and also to an adhesion control method based on the method for determining the creep speed. 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. However, ...

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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 methods 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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