Relationship between subjective and objective evaluations of steering wheel vibration |
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| Authors: | Wan-Suk Yoo Sang-Do Na Min-Seok Kim |
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| Affiliation: | (1) Professor, Department of Mechanical Engineering, Pusan National University, 609-735 Busan, South Korea;(2) Department of Mechanical System Design, Pukyong National University, 608-739 Busan, South Korea |
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| Abstract: | Two passenger cars were driven at several speeds over several road profiles to evaluate the subjective ratings of steering
wheel vibration. A 3-axis translational accelerometer was mounted on the steering wheel to measure the acceleration signal
transmitted to the hands. Correlations were determined between the measured accelerations and the subjective ratings of 4
expert drivers and 10 general drivers by using Stevens’ power law. The subjective ratings were found to be more highly correlated
with the r.m.q. (root mean quad) values of the frequency-weighted acceleration than the r.m.s. (root mean square) values of
the frequency-weighted acceleration. Also, the maximum values of r.m.q. (i.e., the component values in the dominant axis)
had the highest correlation with the subjective ratings. |
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