Vehicle Unpaved Road Response Spectrum Acquisition Based on Accelerometer and GPS Data

Sensors

Nan Cong¹  Jianzhong Shang¹  Yanxi Ren² 

[1] College of Mechanical Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, China; E-Mails:;System Institute of Engineering Equipment, Beijing 100093, China; E-Mail:

关键词: road response spectrum;    road simulation;    GPS;    durability test;    sensor fusion;   

DOI  :  10.3390/s120809951

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.