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Vehicle unpaved road response spectrum acquisition based on accelerometer and GPS data.

Cong N, Shang J, Ren Y, Guo Y - Sensors (Basel) (2012)

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: College of Mechanical Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, China. congnan.cn@gmail.com

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.

No MeSH data available.


Acceleration response space history of the front wheel axle.
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f11-sensors-12-09951: Acceleration response space history of the front wheel axle.

Mentions: The equi-distance sampled acceleration history is shown in Figure 11. For comparison, when the simulation speed is set to the mean speed of acquisition, by the method raised in this paper and that directly obtained through Equation (3), the road's space acceleration spectrum Ga(n) and displacement spectrum Gd(n) are plotted in Figures 12 and 13 respectively. In Figure 13, eight standard road spectra according to ISO8068 have been plotted as references.


Vehicle unpaved road response spectrum acquisition based on accelerometer and GPS data.

Cong N, Shang J, Ren Y, Guo Y - Sensors (Basel) (2012)

Acceleration response space history of the front wheel axle.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472809&req=5

f11-sensors-12-09951: Acceleration response space history of the front wheel axle.
Mentions: The equi-distance sampled acceleration history is shown in Figure 11. For comparison, when the simulation speed is set to the mean speed of acquisition, by the method raised in this paper and that directly obtained through Equation (3), the road's space acceleration spectrum Ga(n) and displacement spectrum Gd(n) are plotted in Figures 12 and 13 respectively. In Figure 13, eight standard road spectra according to ISO8068 have been plotted as references.

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: College of Mechanical Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, China. congnan.cn@gmail.com

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.

No MeSH data available.