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High-speed train energy-saving operation curve online calculation method based on predictive control

A predictive control, high-speed train technology, applied in the direction of the operation center control system, transportation and packaging, railway car body components, etc., can solve the problems of operation disturbance delay, difficulty in ensuring train running performance, etc.

Active Publication Date: 2021-01-22
BEIJING JIAOTONG UNIV
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Problems solved by technology

In addition, uncertain operational disturbances as well as Temporary Speed ​​Restrictions (TSRs) may cause unexpected delays
Therefore, in the above cases, if the ATO only tries to follow the reference speed profile determined off-line, it is difficult to ensure the driving performance of the train

Method used

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  • High-speed train energy-saving operation curve online calculation method based on predictive control
  • High-speed train energy-saving operation curve online calculation method based on predictive control
  • High-speed train energy-saving operation curve online calculation method based on predictive control

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[0113] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred examples and accompanying drawings. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0114] All the examples in the present invention use the high-speed rail line data from Beijing to Tianjin and the parameters of the CRH3 train. The distance between Beijing South Railway Station and Tianjin Railway Station is 122.12 kilometers. The static speed limit of the line and the slope of the track such as figure 1 The parameters of the CRH3 high-speed train are shown in Table 1.

[0115] Table 1 Parameters of CRH3 high-speed train

[0116]

[0117] The maximum traction and braking forces (both expressed in kN) are

[0118]

[0119]

[0120] The reference speed trajectory of th...

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Abstract

The invention relates to a high-speed train energy-saving operation curve online calculation method based on predictive control. The method comprises the steps of S1, using line gradient, speed limitation, train parameters and a train reference speed curve as train control system input; S2, in each sampling control period, monitoring and obtaining real-time speed and displacement information of train operation; and S3, designing a prediction control method according to the real-time speed and displacement information of the train, and calculating an operation curve of the train on line to realize energy-saving operation of the train. Modeling is carried out according to a predictive control method by taking energy conservation as a target. In each control step, the optimal control problemis converted into a multi-stage optimal control problem, and then the multi-stage optimal control problem is efficiently solved through a pseudo-spectral method. The optimal control problem of the train in the prediction time domain is repeatedly solved in each step, and the energy-saving train speed curve of the whole travel of the train is obtained on line. The method has the advantages of highcalculation efficiency, good robustness and the like, and can realize real-time calculation of the running speed curve of the high-speed train.

Description

technical field [0001] The invention relates to the field of rail traffic operation control. More specifically, it relates to a method for online calculation of energy-saving running curves of high-speed trains based on predictive control with the goal of saving energy. Background technique [0002] In recent years, with the rapid development of high-speed railways, many high-speed railway systems operate in a highly automated manner, and automatic train control (ATC) systems play an important role in the safe and energy-saving operation of high-speed railways. One of the key subsystems that make up the ATC is the automatic train operation (ATO) system. The main function of this system is to realize the automatic driving of the train, improve the operating efficiency of the train, and save the energy consumption of the train. For the ATO system, the most important thing is to be able to effectively and accurately track the optimal running speed curve of the train. Therefore...

Claims

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Application Information

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IPC IPC(8): B61L27/00
CPCB61L27/20
Inventor 李树凯仲维锋陈泽彬杨立兴高自友
Owner BEIJING JIAOTONG UNIV
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