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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.


Vehicle response acquisition system.
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f1-sensors-12-09951: Vehicle response acquisition system.

Mentions: As shown in Figure 1, the acquisition system consists of four groups of Endevco-7596 accelerometers on each spindle of the host vehicle as well as a set of data collection systems with an ordinary GPS module. During the operation, the sensors simultaneously record the acceleration histories a(t) at all axles, longitude and latitude history λ(τ), Ø(τ) and speed history v(τ) of the vehicle. Here, t and τ all indicate the time, while they stand for possibly different time sampling intervals of the acceleration and GPS output histories. The sampling frequencies corresponding to acceleration and GPS data are Fsa and FsGPS.


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

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

Vehicle response acquisition system.
© Copyright Policy
Related In: Results  -  Collection

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

f1-sensors-12-09951: Vehicle response acquisition system.
Mentions: As shown in Figure 1, the acquisition system consists of four groups of Endevco-7596 accelerometers on each spindle of the host vehicle as well as a set of data collection systems with an ordinary GPS module. During the operation, the sensors simultaneously record the acceleration histories a(t) at all axles, longitude and latitude history λ(τ), Ø(τ) and speed history v(τ) of the vehicle. Here, t and τ all indicate the time, while they stand for possibly different time sampling intervals of the acceleration and GPS output histories. The sampling frequencies corresponding to acceleration and GPS data are Fsa and FsGPS.

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.