Vehicle-mounted detection method fusing vehicle speed information and axle box vertical acceleration information for wheel flats

Abstract

The invention discloses a vehicle-mounted detection method fusing vehicle speed information and axle box vertical acceleration information for wheel flats, which mainly solves the problems that in the prior art, the existing detection method for wheel flats has the disadvantages of limited application scope, inconvenience in use and maintenance, and higher cost. The method comprises the following steps of: detecting vehicle operating velocity v and vertical vibration acceleration a of a vehicle axle box; carrying out information fusion on the velocity v and the vertical vibration acceleration a of the axle box according to a fusion rule, carrying out feature extraction on the fused data to obtain the vibration performance of the vehicle axle box, and then analyzing the vibration performance of the vehicle axle box when wheel flats exist; and digesting and comparing the obtained vibration performances, building a judgment rule of wheel flats, and then carrying out dynamic detection on wheel flats. Through the scheme, the aims of broader application scope, convenience in implementation and maintenance, and low cost are achieved, and higher practical value and popularization value are realized.

Description

technical field [0001] The invention relates to a detection method, in particular to a vehicle-mounted detection method for wheel flat scars which combines vehicle speed information and axle box vertical acceleration information. Background technique [0002] In recent years, with the rapid development of my country's economy, in order to enhance the image of the city, speed up the urban process, and optimize the urban traffic structure, large and medium-sized cities across the country are vigorously building subways, as the use and production of subway vehicles account for about one-fifth of the world's total At the same time, we also export a large number of subway vehicles to Iran, Thailand, Hong Kong, Saudi Arabia, India and other countries, so it is very important to ensure the safety of subway vehicles during operation. [0003] Due to the frictional force of the rolling stock during operation, it is easy to cause the wheel tread to be scratched, peeled off, cracked and...

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Problems solved by technology

[0010] The purpose of the present invention is to provide a vehicle-mounted detection method for wheel flat scars that combines vehicle speed information and axlebox vertical acceleration information, mainly to solve the problem of limited application range, inconvenient use and maintenance, and high cost of wheel flat scar detection methods in the prior art. higher question

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