Classification of the road surface condition on the basis of vibrations of the sprung mass in a passenger car

Scientific Conference on Automotive Vehicles and Combustion Engines 2016

Praznowski, K.^1 ; Mamala, J.^1

Opole University of Technology, Faculty of Mechanical Engineering, Poland^1

关键词: Actual conditions;    Changing environment;    Frequency domains;    Longitudinal vibrations;    Power spectral densities (PSD);    Recorded signals;    Road surface condition;    Short time Fourier transforms;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/148/1/012022/pdf
DOI  :  10.1088/1757-899X/148/1/012022

来源: IOP

【 摘 要 】

In order to identify the state of the wheel balance in a passenger car on the basis of vibrations of the car body under actual conditions of its operation, it is necessary to determine the impact of random interferences resulting from a changing environment. For this purpose, the criterion for the evaluation of the road surface condition was developed on the basis of longitudinal vibrations of the car body of the tested car in the speed range from 50 km/h to 110 km/h. Selected functions such as: probability distribution and methods in the frequency domain: short-time Fourier transform (STFT) and power spectral density (PSD) were used to analyse recorded signals.