Locomotive constant speed operation control method

A technology of operation control and locomotive, applied in the direction of computer control, locomotive, speed/acceleration control, etc., can solve the problems of difficult to achieve constant speed operation, great difficulty, too fast vehicles, etc.

Inactive Publication Date: 2008-07-02
CRRC QINGDAO SIFANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If only relying on the traction and braking system controlled by the traditional manual operation of the driver, it is quite difficult to adjust the vehicle to a constant speed running state in a small range, usually the vehicle will be too fast or too slow , it is difficult to achieve the expected constant speed operation

Method used

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  • Locomotive constant speed operation control method

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Embodiment 1

[0020] Example 1, such as figure 1 As shown, the locomotive applying the constant speed running control method of the present invention, the loading or unloading operation performed by the traction mechanism, and the braking mechanism control the pressure change of the brake cylinder through the pressure change of the individual action pipe to achieve braking. Operations are performed using existing technologies.

[0021] The inventive technical feature of the present invention is that, through the program set in the programmable controller PLC, the instant speed of the locomotive is detected periodically and cyclically, and then the loading, unloading or braking state of the locomotive is automatically selected.

[0022] And through the programmable controller PLC, quantitatively output the loading and unloading control electrical signals sent to the traction mechanism; or through the air pressure signal output to the proportional pressure reducing valve, control the brake cy...

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Abstract

The invention is a locomotive constant speed operation control method, wherein a programmable logic controller (PLC) detects and converts the locomotive speed to control the locomotive in a running state of constant speed within a small deviation, without the need of manual intervention and adjustment operation of the driver. During two adjacent testing periods, the speed-detecting data are input to the PLC to get two locomotive real-time speeds which are compared to determine the locomotive real-time acceleration of a. If the real time acceleration of a belongs to the range of [(V constant - Delta) - V, (V constant + Delta) - V], the PLC will not send any control signal to the drawing mechanism, and if the real time acceleration of a is smaller than the lower limit of the interval, the PLC will send a control signal of loading to the drawing mechanism, and if the real-time acceleration of a is larger than the upper limit of the interval, the PLC will send a control signal of load reduction or send a braking control signal to the braking mechanism to reduce locomotive real-time acceleration of a.

Description

technical field [0001] The invention relates to a control method for realizing constant-speed operation of a locomotive by applying a programmable logic controller (PLC), belonging to the field of automatic control. Background technique [0002] At present, the operation of rail vehicles has been controlled by computer simulation. The programmable logic controller (PLC) of the main control device simulates and displays the operating data of each actuator of the locomotive, so that the driver can control or adjust the running state of the locomotive, or provide The driver provides early warning of emergencies and takes corresponding actions. [0003] In actual operation, it is often necessary to adjust the locomotive to a constant speed running state. For example, when an industrial and mining locomotive is loaded with goods, the locomotive should pass through several detection sensors at a relatively low constant speed to ensure the accuracy of the detected load data. . Si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D13/00G05B19/045B61C17/00B60K31/04
Inventor 苗欣焦京海刘春涛
Owner CRRC QINGDAO SIFANG CO LTD
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