%0 Journal Article
%T Vehicle Unpaved Road Response Spectrum Acquisition Based on Accelerometer and GPS Data
%A Nan Cong
%A Jianzhong Shang
%A Yanxi Ren
%A Yao Guo
%J Sensors
%D 2012
%I MDPI AG
%R 10.3390/s120809951
%X This paper describes a response acquisition system composed of some spindle accelerometers and a time synchronized on-board GPS receiver developed in order to collect the dynamic response of vehicle riding on an unpaved road. A method of time-space conversion for calculating the response spectrum is proposed to eliminate the adverse effect of time-varying speed, based on the transform from the equitime sampled spindle acceleration responses to equidistance sampling. By using two groups of independent distance histories acquired from GPS, a method called long-range error correction is proposed to improve the accuracy of the vehicle¡¯s distance information, which is critical for the time-space conversion. The accuracy and limitations of the system have been analyzed, and its validity has been verified by implementing the system on a wheel loader for road response spectrum measuring. This paper offers a practical approach to obtaining unpaved road response spectra for durability road simulation.
%K road response spectrum
%K road simulation
%K GPS
%K durability test
%K sensor fusion
%U http://www.mdpi.com/1424-8220/12/8/9951