Motor train unit brake lining wear loss estimation method based on on-line monitoring

Abstract

The invention relates to a motor train unit brake lining wear loss estimation method based on on-line monitoring. The estimation method comprises the following steps of 1) monitoring the operation state of a motor train unit and the working state of a subsystem and transmitting collected train operation date to a ground receiving system; 2) storing the operation data and screening out speed, BC pressure, AC pressure and brake time duration during train operation from the received data through the ground receiving system; 3) according to the screened data, determining the equivalent friction distance of the pressure exerted on a brake lining and a brake disc at an nth time; 4) according to the equivalent friction distance and the BC pressure, determining the total wear loss of the brake lining at the nth time. The motor train unit brake lining wear loss estimation method based on on-line monitoring can help estimate the wear loss of every train brake lining relatively accurately according to the brake condition of every train and can prolong the service life of the brake lining under the premise of guaranteeing the brake performance of the brake lining, thereby avoiding waste and reducing the maintaining cost.

Description

technical field [0001] The invention relates to the field of information technology, in particular to a method for estimating the wear amount of brake pads of a train set based on online monitoring. Background technique [0002] The braking system is one of the most important systems of a train. Brake pads are a key component of the braking system. Its performance is directly related to the safety of the train running. Under the action of high temperature and strong pressure during braking, it will cause certain wear and tear to the key components of the braking system. In order to ensure the performance of the braking system, the railway sector generally adopts timing (mileage) replacement at present. Two risks arise from this: one is under-maintenance; the other is over-repair. The former causes excessive wear and affects driving safety, while the latter causes waste and increases maintenance costs. Although the EMU braking system only accounts for about 15% of the en...

AI Technical Summary

Problems solved by technology

[0020] However, the wear model used in the above-mentioned patent 1 is very different from the wear model of the EMU brake pads, and the methods proposed in patent 2 and patent 3 require more detection parameters, and it is difficult to obtain corresponding parameters when the EMU is running at high speed. data

Therefore, the above three patents are not suitable for the estimation of wear amount of EMU brake pads

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