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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 history time-space conversion.
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f2-sensors-12-09951: Acceleration history time-space conversion.

Mentions: As mentioned previously, because of the different sampling frequencies the accelerometer and GPS receiver possess, the acceleration history a(t) and distance history S(τ) are not in point-to-point correspondence. Therefore, a sensor fusion procedure is needed. The procedure converts the equitime acquired acceleration history a(t) to an equispace acceleration history a(S) by two interpolation operations, as shown in Figure 2 (taking S1(τ) as example):


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

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

Acceleration history time-space conversion.
© Copyright Policy
Related In: Results  -  Collection

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

f2-sensors-12-09951: Acceleration history time-space conversion.
Mentions: As mentioned previously, because of the different sampling frequencies the accelerometer and GPS receiver possess, the acceleration history a(t) and distance history S(τ) are not in point-to-point correspondence. Therefore, a sensor fusion procedure is needed. The procedure converts the equitime acquired acceleration history a(t) to an equispace acceleration history a(S) by two interpolation operations, as shown in Figure 2 (taking S1(τ) as example):

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.