Engineering Mechanics

Proceedings Vol. 22 (2016)

ENGINEERING MECHANICS 2016

Copyright © 2016 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague

 

Perczynski D., Peszynski K., Knopik L., Wawrzyniak S.
pages 481 - 484, full text

The paper demonstrates the friction nodes statistical analysis of road tractor brakes as well as the temperatures analysis of selected wheel breaking systems. The measurement system consists of six temperature sensors mounted in the vicinity of the friction nodes and seventh to measure the ambient temperature. The output signals of the sensors are transmitted to a digital temperature meter based on ATmega 32 microcontroller. The measurement results were recorded on the SD memory card. The digital temperature sensors of the 1-wire interface manual DS18B20 of Dallas Semiconductor were used to measure the temperature. Moreover, the paper presents the research regarding the wheel temperature dependency of the outside temperature. The Principal Component Analysis was used for statistical testing of brakes temperatures. The method enables the statistical task dimension designation. The dependence analysis between the pairs of wheels was carried out using correlation methods and the spectral analysis of stochastic processes. The study of the coherence function proved that testing system is a linear system with constant parameters.

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