Sensors 2012, 12(8), 9951-9964; doi:10.3390/s120809951
Article

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

1 College of Mechanical Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, China 2 System Institute of Engineering Equipment, Beijing 100093, China
* Author to whom correspondence should be addressed.
Received: 10 April 2012; in revised form: 6 July 2012 / Accepted: 16 July 2012 / Published: 25 July 2012
(This article belongs to the Section Physical Sensors)
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Abstract: 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.
Keywords: road response spectrum; road simulation; GPS; durability test; sensor fusion

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MDPI and ACS Style

Cong, N.; Shang, J.; Ren, Y.; Guo, Y. Vehicle Unpaved Road Response Spectrum Acquisition Based on Accelerometer and GPS Data. Sensors 2012, 12, 9951-9964.

AMA Style

Cong N, Shang J, Ren Y, Guo Y. Vehicle Unpaved Road Response Spectrum Acquisition Based on Accelerometer and GPS Data. Sensors. 2012; 12(8):9951-9964.

Chicago/Turabian Style

Cong, Nan; Shang, Jianzhong; Ren, Yanxi; Guo, Yao. 2012. "Vehicle Unpaved Road Response Spectrum Acquisition Based on Accelerometer and GPS Data." Sensors 12, no. 8: 9951-9964.

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