Rapid adhesion control method used for motor train unit

Abstract

The invention related to a rapid adhesion control method used for a motor train unit, which comprises the following steps: 1) a wheel set acceleration threshold aP is set according to self designed parameter and rail surface comprehensive status of the motor train unit; 2)a current wheel set acceleration value a(t) is calculated according to a feedback signal of the motor train unit; 3)the current wheel set acceleration value a(t) is compared with the wheel set acceleration threshold aP, If the current wheel set acceleration value a(t) exceeds aP, the idle running phenomenon is generated for the wheel, motor torque deloading is carried out based on a parabola interpolation principle, and simultaneously, a notification is sent to a drivers' cab for the idle running phenomenon; during a motor torque deloading process, if the current wheel set acceleration value a(t) is decreased to zero, the adhesion state between the wheel tracks is recovered, motor torque recovery is carried out based on a dynamic optimization principle until the forward velocity of the motor train unit can reach the assigned driving speed of the driver. According to the invention, the rapid adhesion control method can appropriately deload the motor torque for eliminating the idle running phenomenon, and is capable of rapidly recovering good adhesion state between the wheel tracks.

Description

technical field [0001] The invention mainly relates to the technical field of control of traction drive systems of multiple train sets, in particular to a fast sticking control method suitable for multiple train sets. 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 wheelset 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. Adhesion control refers to: in the case of variable rail surface conditions (such as rail surface water, icing, etc. caused by rain and snow), through the collection and processing of information such as motor speed and motor torque, combined with driver instructions Send an appropriate motor torque command to the motor controller, so that the EMU can exert the maximum adhesion force allowed between the curre...

AI Technical Summary

Problems solved by technology

[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 will idling, causing serious wheel and rail abrasions

Some researchers have also proposed some adhesion control schemes, such as: locomotive anti-idling sliding method based on speed control, electric locomotive adhesion control method and device, etc. However, these adhesion control methods have not considered the high-speed characteristics of the EMU. Sophisticated motor torque load shedding and motor torque recovery strategies, the result is that the EMU does not fully exert its maximum adhesion, and the resulting loss of traction has a negative impact on the dynamic performance of the EMU itself, the constant speed cruise function, and the dispatching of high-speed railways. Planning and other aspects have had a negative impact on

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