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An optimal allocation method of high-speed train braking force considering adhesion and comfort

A technology for high-speed trains and optimized distribution, applied in the direction of brakes, etc., can solve problems such as the sticking limit of each carriage of the weight, the lack of in-depth research on the passenger riding comfort distribution algorithm, etc. Effect

Active Publication Date: 2022-04-22
HUNAN UNIV OF TECH
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Problems solved by technology

[0005] The research of the present invention on the distribution of braking force of existing high-speed trains mainly focuses on the theoretical control strategy, and there is no in-depth study on the specific distribution algorithms such as the weight of each car in the whole train, the adhesion limit of each car, and the comfort of passengers. , providing an optimal allocation method of high-speed train braking force considering adhesion and comfort

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  • An optimal allocation method of high-speed train braking force considering adhesion and comfort
  • An optimal allocation method of high-speed train braking force considering adhesion and comfort
  • An optimal allocation method of high-speed train braking force considering adhesion and comfort

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Embodiment Construction

[0060] The present invention will be further described below in combination with specific embodiments.

[0061] A high-speed train braking force optimization distribution method considering adhesion and comfort; comprising the following steps:

[0062] S1. By performing dynamic analysis on all compartments of the high-speed train, the dynamic model of the high-speed train is obtained, and a dynamic equation for the multi-particle model of the high-speed train is established;

[0063] The train dynamics model is:

[0064]

[0065] Among them, i=1,2,..., n is the number of compartments; m i is the mass of the i-th carriage; is the acceleration of the i-th carriage; u′ i is the control input of the i-th car; f di Indicates the running resistance acting on the i-th carriage; f i Indicates the interaction force between the i-th car and the i+1-th car;

[0066] The formula for calculating the basic resistance of a high-speed train is:

[0067]

[0068] in, is a const...

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Abstract

The invention discloses a high-speed train braking force optimization distribution method considering adhesion and comfort, comprising the following steps: S1: performing dynamic analysis on the high-speed train to establish a high-speed train dynamic equation; S2: designing a sliding mode controller to solve the train The given value of the braking force of each car during stable operation; S3: Prove the stability of the sliding mode controller, and obtain the target braking force in the longitudinal direction of the train; S4: Under the premise of the given target braking force, use the adhesion utilization rate to construct the target function, select the adhesion limit and ride comfort as constraints; S5: transform the constructed objective function and constraints into a quadratic programming form to solve; S6: obtain the optimal solution of each car after optimization from the quadratic programming form Brake force to be distributed. The invention ensures that the braking force allocated to each car after optimization is different according to the weight of the car, and at the same time, it can also ensure that the running state of each car is good after the braking force is distributed, which meets the requirements of actual working conditions.

Description

technical field [0001] The invention relates to the technical field of high-speed train braking control, and more particularly, relates to a high-speed train braking force optimization distribution method considering adhesion and comfort. Background technique [0002] As the main high-end equipment of rail transit, high-speed trains undertake the country's major development strategy. As an important part of high-speed trains, the braking system plays an important role, and effective and reliable braking is an important prerequisite for safe operation. Therefore how to ensure the smooth, accurate and reliable braking of high-speed trains is particularly important. [0003] The braking force of a high-speed train is jointly provided by multiple carriages, and the effective exertion of the braking force depends on the adhesion formed when the wheel set and the rail are in contact. In actual operation, the braking force applied by the high-speed train should be less than the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/17B60T8/172B60T8/174B60T8/18
CPCB60T8/1705B60T8/172B60T8/174B60T8/1893
Inventor 何静赵鹏娟张昌凡刘建华杨醒醒张乾史来诚
Owner HUNAN UNIV OF TECH
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