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A subway vehicle and its motor torque recovery method, system and application system

A technology of motor torque and recovery method, which is applied to vehicle components, electric vehicles, control drives, etc., can solve the problems of low stability and ride comfort of subway vehicles, and achieves solutions such as poor stability and ride comfort, and torque recovery. Process smoothing effect

Active Publication Date: 2015-11-11
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the present application provides a motor torque recovery method, system and application system for subway vehicles to solve the problems of low stability and ride comfort of subway vehicles caused by existing motor torque recovery methods

Method used

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  • A subway vehicle and its motor torque recovery method, system and application system
  • A subway vehicle and its motor torque recovery method, system and application system
  • A subway vehicle and its motor torque recovery method, system and application system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Figure 4 It is a flow chart of a motor torque recovery method for a subway vehicle provided in an embodiment of the present application.

[0051] Such as Figure 4 As shown, the motor torque recovery method of the subway vehicle provided in this embodiment includes the following steps:

[0052] S101: idling coasting is detected, waiting for the end of unloading;

[0053] When idling is detected, wait for the end of unloading, and record the maximum torque unloading amount at this moment. The so-called maximum torque unloading amount refers to the difference between the current torque of the motor after unloading and the given torque.

[0054] S102: start to restore the motor torque;

[0055] When the unloading is over, the motor torque is restored, and during the restoration process, the restoration is performed according to the current unloading amount at each moment and the current torque restoration amount calculated according to the preset equation. The so-called...

Embodiment 2

[0061] Figure 5 It is a flow chart of a motor torque recovery method for a subway vehicle provided in another embodiment of the present application.

[0062] Such as Figure 5 As shown, the motor torque recovery method of the subway vehicle provided in this embodiment includes the following steps:

[0063] S201: idling coasting is detected;

[0064] S202: Detect whether the uninstallation is finished;

[0065] If it is over, go to the next step, if it is not over, continue to wait.

[0066] S203: record the maximum torque unloading amount x 0 ;

[0067] S204: Calculate the unloading coefficient a;

[0068] According to the formula a=k.x 0 ; Wherein k is a constant coefficient, preferably in the range of 1-5.

[0069] S205: Calculate the per unit value y of the current torque recovery amount;

[0070] According to the formula y = f ( x ; a ) = ...

Embodiment 3

[0078] Figure 7 A structural diagram of a motor torque recovery system for a subway vehicle provided in another embodiment of the present application.

[0079] Such as Figure 7 As shown, the motor torque recovery system provided by this embodiment includes a detection device 10 , a calculation device 20 , a recovery device 30 and a comparison device 40 .

[0080] The detection device is used to detect idling slide, wait for the completion of unloading when idling slide occurs, and record the maximum moment unloading amount when unloading is completed.

[0081] The computing device 20 is used to perform recovery according to the difference between the current torque of the motor at each moment and the given torque, that is, the current unloading amount, and the current torque recovery amount calculated according to the preset equation obtained from the maximum torque unloading amount during the restoration process .

[0082] The recovering device 30 is used for recovering ...

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Abstract

The invention provides a motor torque recovery method of a subway vehicle. The method includes: detecting idling and slipping, awaiting completion of unloading, and recording maximum unloading amount; starting to recover motor torque when unloading is complete, and calculating according to current unloading amount and a preset equation to obtain current torque recovery amount of each moment during recovery; when current torque of a motor is larger than or equal to a given torque, stopping recovering the motor torque. Awaiting time is none; the torque recover amount of each moment in the recovery process is obtained by calculating according to the current unloading amount and the preset equation, the torque is not recovered in a nonlinear manner, the torque recovery process is smooth, and accordingly, the problem that the use of the existing motor torque recovery method causes poor stability and poor riding comfort of the subway vehicle is solved.

Description

technical field [0001] The present application relates to the technical field of subway vehicles, and more specifically, relates to a method, system and application system for a subway vehicle and its motor torque recovery method. Background technique [0002] There are three states for the wheels of subway vehicles running on the rails, which are as follows: [0003] (1) Pure rolling state. This state is an ideal state. At this time, there is no relative sliding between the wheel and the rail, and the friction between the wheel and the rail is static friction. The static friction at this time is the maximum traction / Braking torque; [0004] (2) Adhesive state, the wheel and rail will be slightly deformed under high pressure, and the contact part between the wheel and rail forms an elliptical contact area. The contact surface between the wheel and rail is not a pure static friction state, but a kind of adhesion The sticking state is a state between the pure rolling state ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/00
Inventor 彭辉水许峻峰李江红李科
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST