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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.


Original acceleration response time history at left front wheel axles.
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f7-sensors-12-09951: Original acceleration response time history at left front wheel axles.

Mentions: By using the acquisition system shown in Figure 1, all four wheels' acceleration responses (with frequency of 2 kHz) had been acquired during a wheel loader riding through a gradeless straight unpaved proving ground (PG) road. Considering that the low vibration frequency band (<30 Hz, as above mentioned) is useful for the durability tests, an anti-aliasing low-pass filter and resampling process with frequency of 100 Hz are implemented to the original collected signal. Figure 7 gives the time response history of the left front wheel. Figure 8 presents the comparison result of the processed wheel response with original acquired signal in one second.


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

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

Original acceleration response time history at left front wheel axles.
© Copyright Policy
Related In: Results  -  Collection

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

f7-sensors-12-09951: Original acceleration response time history at left front wheel axles.
Mentions: By using the acquisition system shown in Figure 1, all four wheels' acceleration responses (with frequency of 2 kHz) had been acquired during a wheel loader riding through a gradeless straight unpaved proving ground (PG) road. Considering that the low vibration frequency band (<30 Hz, as above mentioned) is useful for the durability tests, an anti-aliasing low-pass filter and resampling process with frequency of 100 Hz are implemented to the original collected signal. Figure 7 gives the time response history of the left front wheel. Figure 8 presents the comparison result of the processed wheel response with original acquired signal in one second.

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.