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Braking control method as well as braking system and braking method of double-locomotive reconnection locomotive

A braking control, locomotive technology, applied in the direction of brakes, etc., can solve problems such as poor locomotive braking effect

Active Publication Date: 2018-03-06
CENT SOUTH UNIV
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Problems solved by technology

[0003] In view of the problem that the braking effect of the locomotive is not good due to the vibration problem of the system in the existing locomotive braking process, the present invention provides a braking control method, a dual-machine double-connected locomotive braking system and a braking method, which combine Sliding film control and fuzzy control, improve the braking effect of the braking control process, and eliminate the "jitter" of the system

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  • Braking control method as well as braking system and braking method of double-locomotive reconnection locomotive
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  • Braking control method as well as braking system and braking method of double-locomotive reconnection locomotive

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Embodiment Construction

[0115] The invention will be described below in conjunction with specific embodiments and drawings.

[0116] The invention provides a brake control method for a locomotive, such as figure 1 As shown, when the system is unstable, the control method includes the following steps:

[0117] Step 1: Obtain the speed parameters of the locomotive;

[0118] Step 2: Use the vehicle speed parameter of step 1 to calculate the input amount e of the sliding surface;

[0119] Step 3: According to the input value e of step 2, combine the sliding mode control principle of the system and the principle of locomotive dynamics to calculate the equivalent control variable U of the sliding mode control eq ;

[0120] Step 4: Combine the input value e of step 2 with the switching function of the sliding mode surface of the system and the fuzzy controller to obtain the fuzzy control value U F ;

[0121] Step 5: According to the equivalent control quantity U of step 3 eq And the fuzzy control quantity U of step 4...

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Abstract

The invention discloses a braking control method as well as a braking system and braking method of a double-locomotive reconnection locomotive. The braking control method comprises the following steps: step 1: obtaining a speed parameter of the locomotive; step 2: calculating an input quantity e of a sliding mode surface by using the speed parameter of the locomotive obtained in step 1; step 3: calculating an equivalent control quantity Ueq of the sliding mode control according to the input quantity e obtained in step 2 and combining with a sliding mode control principle of the system and a locomotive dynamics principle; step 4: obtaining a fuzzy control quantity UF according to the input quantity e obtained in step 2 and combining with a switching function of the sliding mode surface of the system and a fuzzy controller; and step 5: calculating a braking torque Tb according to the equivalent control quantity Ueq obtained in step 3 and the fuzzy control quantity UF obtained in step 4,and realizing braking control through the braking torque Tb. Through the adoption of the method disclosed by the invention, the sliding mode control and the fuzzy control are combined, so that the influences of the inaccuracy and the disturbance of a system model are overcome, besides, the jitter is removed, an uncertain system is close, the slip ratio of the locomotive is kept close to the optimal slip ratio, and the braking effect is improved.

Description

Technical field [0001] The invention relates to the technical field of railway transportation, in particular to a braking control method, a dual-motor multiple locomotive braking system and a braking method. Background technique [0002] With the development of electrified railways in our country, the continuous updating of railway technology and equipment, the degree of intelligence of railway signals is getting higher and higher, and the actual operating conditions of locomotives during railway transportation are more demanding, and the performance stability of key components such as brakes directly affects The development of train operation technology and personal and cargo safety. According to the actual situation of the locomotive, the control output of the control system has a delay, the measurement of the system state has an error, and the control output has a mechanical limit. Due to the "jitter" of the system caused by the discontinuous switching characteristics, the ex...

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Application Information

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IPC IPC(8): B60T8/17B60T8/172B60T8/1755
CPCB60T8/1705B60T8/172B60T8/1755
Inventor 张晓勇熊宇峰黄志武蒋富李烁高凯杨迎泽彭军刘伟荣于文涛
Owner CENT SOUTH UNIV
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