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Electric locomotive adhesion control method and device

A technology of adhesion control and electric locomotive, applied in the direction of locomotive, adaptive control, general control system, etc., can solve the problems that affect the performance of motor control system, cannot be eliminated, poor system stability and robustness, etc., and achieve strong robustness and the ability to deal with uncertainty, improve adhesion utilization, and achieve the effect of optimal utilization

Active Publication Date: 2016-03-02
CHINA CNR CORPORATION
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AI Technical Summary

Problems solved by technology

The disadvantage is that the creep speed obtained by the direct creep speed method is usually inaccurate, because the absolute speed of the electric locomotive is difficult to obtain
Its disadvantage is that the quadrature correlation method needs to superimpose the phase measurement signal on the motor, and this signal is an irreversible interference to the motor control system, which will inevitably affect the performance of the motor control system
The adhesion coefficient derivative method needs to obtain the adhesion slope through differentiation, and the differential operation has the effect of amplifying the noise, which is easily disturbed by the noise, and the system stability and robustness are poor

Method used

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  • Electric locomotive adhesion control method and device
  • Electric locomotive adhesion control method and device
  • Electric locomotive adhesion control method and device

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Embodiment 1

[0031] Such as Figure 4 As shown, the schematic flow chart of Embodiment 2 of the adhesion control method for electric locomotive provided by the present invention. Based on Embodiment 1, this embodiment also includes the following steps:

[0032] Step a1, according to locomotive operating parameters, locomotive operating environment parameters and locomotive traction structural factors to create adhesion control type II fuzzy model;

[0033] Step a2. According to the current locomotive operation situation, it is necessary to assign initial values ​​to the parameters in the sticking control type II fuzzy model, wherein the parameters are any one or any of the acceleration threshold, creep speed threshold and creep rate combination.

[0034] By adding the two steps described in this embodiment, the adhesion control type II fuzzy model can be recreated based on actual operating experience or newly discovered influencing factors, so that the adhesion control method for electri...

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Abstract

The invention provides an electric locomotive adhesion control method and a device. The method comprises the following steps: collecting rotating speed information of locomotive wheel shafts at real time; performing digital filtering processing of the rotating speed information, then converting into digital signals; determining whether the locomotive is in a coasting state according to the digital signals, if yes, calculating a wheel diameter correction coefficient according to the rotating speed information of two driving wheels when receiving a wheel diameter compensation control instruction, and if no, calculating a corresponding adhesion control coefficient according to the collected rotating speed information based on an established adhesion control type-II fuzzy model; and adjusting a correction coefficient of a traction motor torque given value according to the wheel diameter correction coefficient and the adhesion control coefficient based on a preset correction rule. The invention realizes the intelligentization of adhesion control, effectively improves the adhesion utilization rate between wheel tracks, and realizes optimization utilization of available adhesion strength of electric locomotive.

Description

technical field [0001] The invention relates to electric locomotive control technology, in particular to an electric locomotive adhesion control method and device. Background technique [0002] Compared with passenger trains, the operation of low-speed heavy-haul freight trains requires greater traction and braking forces between the wheels and rails. The formation of traction and braking forces of locomotives mainly depends on the adhesion between the wheels and rails. However, the problem of adhesion between wheel and rail is very complicated. It is a complex and highly variable process with great uncertainty. It is affected by many factors such as locomotive design conditions, environmental conditions, and operating conditions. An in-depth study of the controls poses great difficulties. For example, when a train is running on a wet, oily or leafy rail surface, the traction force of the locomotive may exceed the maximum available adhesion between the wheel and rail, resul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61C17/00G05B13/02
Inventor 徐从谦黄景春车向中肖建
Owner CHINA CNR CORPORATION
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