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High-speed train operation kinetic parameter detection method

A technology of dynamic parameters and high-speed trains, applied in the direction of railway vehicle testing, etc., can solve the problem that the related technology of parameter identification is in its infancy, and achieve the effect of reliable technical support

Inactive Publication Date: 2014-06-11
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology

However, as far as the detection of dynamic parameters of high-speed train systems is concerned, due to the randomness of environmental loads experienced by trains in service and the complexity of the train system itself, its parameter identification related technology is still in its infancy.

Method used

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  • High-speed train operation kinetic parameter detection method
  • High-speed train operation kinetic parameter detection method
  • High-speed train operation kinetic parameter detection method

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0023] Such as figure 1 As shown in Fig. 1, a method for detecting the dynamic parameters of high-speed train operation takes the dynamic state of the high-speed train as the monitoring object, mixes on-site test technology and dynamic simulation technology, and measures the dynamic response information of each test point when the high-speed train is running on the line , and the test signal is analyzed and processed by the frequency domain power spectrum to extract the dynamic response characteristics of the vehicle components, the random vibration numerical simulation power spectrum of the vehicle system is consistent with the power spectrum of the line test, and the basic equation of dynamic parameter detection is established, and then the trust region method is applied The L-M solution algorithm obtains the least squares solution of the basi...

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Abstract

The invention relates to a high-speed train operation kinetic parameter detection method which comprises the following steps: establishing a random vibration numerical simulation model of train kinetic state and finishing power spectrum response simulation calculation; optimally laying out a line test sensor, measuring dynamic response time-domain information of each test point during line operation of a train, and extracting vehicle part dynamic response characteristics after frequency-domain power spectrum analysis and processing of a test signal; establishing a basic equation of kinetic parameter detection by consistency between numerical simulation power spectrum and line test power spectrum; and solving the basic equation and obtaining and outputting vehicle kinetic detection parameters under the condition of power spectral density consistency. According to the invention, train kinetic parameters are used as monitoring objects, and by combining a field test technology and a dynamic simulation technology, the basic equation of dynamic parameter detection is established to finish the detection of high-speed train operation dynamic parameters. By the method, long-term behavior assessment of high-speed train operation kinetic parameters is achieved, and technical support is provided for train operation safety and reliability.

Description

technical field [0001] The invention relates to a method for detecting dynamic parameters of high-speed trains based on measured information, in particular to a method for detecting changes in characteristics of operating dynamic parameters of high-speed trains in long-term operation. Background technique [0002] In order to accurately predict the dynamic response behavior of high-speed trains in the long-term service environment, the detection of dynamic parameters of high-speed train systems has received more and more attention. As far as the essence of the problem is concerned, this technology belongs to the identification technology of dynamic parameters of high-speed train system in service, and also belongs to the problem category of train dynamics model correction. For the conventional civil engineering structure model correction technology, great progress has been made in the objects identified by the model, the selection of identification parameters, the selection ...

Claims

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Application Information

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IPC IPC(8): G01M17/08
Inventor 刘天赋丁叁叁田爱琴高宝杰项盼张有为赵岩
Owner CRRC QINGDAO SIFANG CO LTD
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