Generation method of vibration environment long life test spectrum of converter of electric multiple units

An EMU, long-life technology, used in railway vehicle testing, instruments, measuring electrical variables, etc.

Active Publication Date: 2016-12-21
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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However, the measured data obtained through collection or the generalized vibrat

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  • Generation method of vibration environment long life test spectrum of converter of electric multiple units

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[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0049] Please refer to figure 1 , figure 1 It is a flow chart of the method for generating the vibration environment long-life test spectrum of the EMU converter provided by the embodiment of the present invention....

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Abstract

The invention discloses a generation method of a vibration environment long life test spectrum of a converter of electric multiple units. The generation method comprises following steps of: obtaining a vibration environment standard spectrum according to vibration data of a converter installed on electric multiple units; calculating a root mean square value g1 of the vibration environment standard spectrum according to the vibration environment standard spectrum; calculating an accelerated speed proportion coefficient beta according to the total life running distance L of the electric multiple units, the average running speed V of the electric multiple units, the test time T and an index m through a formula: beta = (L/V*T) 1/m; calculating a root mean square value g2 of the vibration environment long life test spectrum according to the accelerated speed proportion coefficient beta and the root mean square value g1 of the vibration environment standard spectrum through a formula: g2 = beta*g1; and calculating the vibration environment long life test spectrum according to the root mean square value g2 of the vibration environment long life test spectrum. In this way, the accurate vibration environment long life test spectrum a can be obtained and improvement of detection reliability is facilitated.

Description

technical field [0001] The invention relates to the technical field of rail transit vehicle equipment, in particular to a method for generating a vibration environment long-life test spectrum of a converter of an EMU. Background technique [0002] With the rapid development of my country's rail transit industry, the market has put forward higher requirements for the stability of EMU converters. [0003] In order to facilitate the testing of the structural strength and durability of the EMU converter, it is often necessary to use long-life simulation tests for quality inspection to ensure the safety and reliability of the EMU converter. However, the measured data obtained through collection or the generalized vibration specification spectrum cannot be directly used for long-life simulation tests. Contents of the invention [0004] The purpose of the present invention is to provide a method for generating the vibration environment long-life test spectrum of the EMU converte...

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Application Information

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IPC IPC(8): G01M17/08G01R31/00
CPCG01M17/08G01R31/006
Inventor 胡昌发许峻峰张宇丁杰李江红张陈林胡亚丹
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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