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Injection method and system for local creep fault of high-speed train wheelset

A high-speed train, fault injection technology, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve problems such as failure to creep fault injection/simulation

Active Publication Date: 2021-03-16
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a local creep fault injection method and system for high-speed train wheel sets, which solves the technical problem that the prior art cannot perform fault injection / simulation for different degrees of creep faults in some power wheel sets of high-speed trains

Method used

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  • Injection method and system for local creep fault of high-speed train wheelset
  • Injection method and system for local creep fault of high-speed train wheelset
  • Injection method and system for local creep fault of high-speed train wheelset

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Embodiment 1

[0053] Such as figure 1 As shown, the invention discloses a method for injecting local creep faults of high-speed train wheelsets, comprising the following steps:

[0054] A method for injection of a local creep fault of a high-speed train wheel set, comprising the following steps:

[0055] Obtain the operating parameters of the high-speed train and the corresponding creep parameters when the local creep failure of the high-speed train wheelset occurs from the historical data;

[0056] Construct fault injection model according to described operation parameter and its corresponding creep parameter; Described fault injection model takes the motor output torque of normal wheelset and faulty wheelset of the high-speed train under the local creep fault to be simulated as input variable, The motor mechanical angular velocity of the normal wheel set and / or the faulty wheel set of the high-speed train to be simulated under the local creep fault, and the car body speed of the high-spe...

Embodiment 2

[0065] Embodiment 2 is a preferred embodiment of Embodiment 1, and its difference from Embodiment 1 is that the construction of the fault injection model in the fault injection method and the structure of the fault injection system are refined:

[0066] In this embodiment, the operating parameters include a first operating parameter, a second operating parameter, and a third operating parameter, and the first operating parameter includes the mass of the train body, the total number of train power wheelsets, and the number of train faulty wheelsets. The total number, the basic resistance of train operation; the second operating parameters include the moment of inertia of the motor side of the normal wheel pair, the moment of inertia of the wheel side of the normal wheel pair, the transmission efficiency of the normal wheel pair gearbox, the transformation ratio of the normal wheel pair gearbox, The wheel radius of the normal wheel set, the motor mechanical angular velocity of th...

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Abstract

The invention discloses an injection method and a system for a local creep fault of a high-speed train wheel set. The method comprises the steps of obtaining creep fault parameters of the fault wheelset and corresponding fault operation parameters of a normal wheel set and the fault wheel set when the fault wheel set of the high-speed train has different degrees of local creep faults are obtainedfrom historical data; constructing a fault injection model according to the creep fault parameters and the fault operation data of the corresponding normal wheel set and the fault wheel set; settingcreep fault parameters of the fault wheel set of the to-be-simulated local creep fault; inputting into the fault injection model; at the fault injection time, switching a model parameter of a creep fault to be simulated in the fault injection model into a creep fault parameter of a preset fault wheel set; and obtaining the operation parameters of the normal wheel set and / or the fault wheel set ofthe high-speed train under the local creep fault so as to realize dynamic simulation / numerical solution of the operation states of the normal wheel set and the fault wheel set under the local creep fault of the high-speed train wheel set.

Description

technical field [0001] The invention relates to the technical fields of transmission control and computer simulation, in particular to a method and system for injecting local creep faults of high-speed train wheel sets. Background technique [0002] When a high-speed train is running, the wheels of the train rotate under the action of the output torque of the wheel-to-rail motor, and the contact between the wheel and the rail is subjected to the positive pressure exerted by the power wheel on the rail. Since the wheel and the rail are both elastic bodies, a Elastic deformation. On the elastically deformed rail surface, the wheel will slide slightly relative to the rail when it rotates, which is called creep. Creep is very important to the operation of the train. Only when there is creep can an adhesive traction / braking force be formed on the contact surface when the wheels rotate, which is the only driving force for the train to move forward. Among them, the manifestation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0262G05B2219/24065
Inventor 杨超桂卫华高飞陈志文阳春华彭涛陶宏伟
Owner CENT SOUTH UNIV