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Locomotive constant speed control method and locomotive control system

A control method and control algorithm technology, applied in locomotives and other directions, can solve problems such as difficulty in ensuring the smoothness of train operation, and achieve the effect of improving accuracy and stability

Active Publication Date: 2019-11-29
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional PID control algorithm has certain limitations. In the face of complex and changeable working conditions, the existing locomotive constant speed control method is difficult to ensure the stability of train operation.

Method used

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  • Locomotive constant speed control method and locomotive control system
  • Locomotive constant speed control method and locomotive control system
  • Locomotive constant speed control method and locomotive control system

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Effect test

Embodiment 1

[0032] If a passenger locomotive needs to be driven at a constant speed, it is necessary to use a certain algorithm, using the set speed of the locomotive, the actual speed of the locomotive, the acceleration, the set force of the locomotive, the actual force of the locomotive, etc. , so as to achieve the best setting force required by the constant speed.

[0033] The algorithms used in the prior art all adjust the speed of the locomotive by adjusting the setting force of the locomotive, so as to stabilize the actual speed of the locomotive near the set speed. Such as figure 1 As shown, the PI algorithm or PID algorithm used by most of the existing passenger locomotives uses the difference between the set speed and the actual speed of the locomotive as the input of the algorithm, takes the set force as the output of the algorithm, and calculates the set speed through the speed difference. Force, in order to achieve constant speed control.

[0034] A constant speed control me...

Embodiment 2

[0045] The operating conditions of electric locomotives are often complex. Faced with complex working conditions, a constant speed control algorithm often cannot meet various external conditions. At the same time, any control algorithm itself has certain limitations, for example, in the PID control algorithm, the system has a contradiction between response speed and overshoot.

[0046] In view of the above problems, the locomotive constant speed control method provided in this embodiment adopts a multi-model control strategy, that is, a compensation control model is added on the basis of the method provided in the embodiment, so that the compensation control model can be used according to specific working conditions Or the non-linear adjustment model as shown in the first embodiment is used to control the constant speed of the locomotive.

[0047] Specifically, the locomotive constant speed control method provided in this embodiment will determine whether the current constant ...

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Abstract

A locomotive constant-speed control method and a locomotive control system are provided. The method comprises a step 1 of acquiring a current locomotive speed and calculating a difference value between the current locomotive speed and a preset locomotive speed to obtain a first speed difference value; a step 2 of acquiring a current locomotive load and determining a current adjustment coefficientaccording to the current locomotive load and a preset nonlinear adjustment curve, wherein the preset nonlinear adjustment curve is a function relationship between the locomotive load and the adjustment coefficient; a step 3 of determining a second speed difference value according to the first speed difference value and the current adjustment coefficient, and outputting a corresponding set force according to the second speed difference value by using a preset speed control model in order that the speed of the locomotive remains constant. The method enables a passenger locomotive to adapt to different locomotive loads under a constant-speed condition, and improves the accuracy and stability of the locomotive constant0speed control.

Description

technical field [0001] The invention relates to the technical field of electric locomotives, in particular to a locomotive constant speed control method and a locomotive control system. Background technique [0002] The constant speed function can effectively prevent the driver from frequently operating the controller handle during the long-distance operation of passenger locomotives, thereby reducing the driver's driving pressure. Therefore, a reliable stability optimization method for electric locomotives at constant speed is of great significance in the control system of passenger locomotives. [0003] Compared with freight locomotives, passenger locomotives have the characteristics of light load and fast response, so it is more difficult to control the constant speed of passenger locomotives. Existing constant speed control methods for passenger locomotives are usually implemented using PID control algorithms. However, the traditional PID control algorithm has certain ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61C17/00
CPCB61C17/00
Inventor 王佳黄赫江帆张森黄利辉郭亮周开成刘毅江伟波欧阳辉云
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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