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Vehicle Unpaved Road Response Spectrum Acquisition Based on Accelerometer and GPS Data
College of Mechanical Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, China
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
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.
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.
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.