Prediction of Objective Passenger Comfort From Road Profile

[+] Author and Article Information
W. H. Park, J. C. Wambold

Department of Mechanical Engineering, The Pennsylvania State University, University Park, Pa.

R. G. Vashlishan

Sikorsky Aircraft, Stratford, Conn.

J. Eng. Ind 96(2), 503-508 (May 01, 1974) (6 pages) doi:10.1115/1.3438357 History: Received June 06, 1973; Online July 15, 2010


Objective comfort evaluation using the method of absorbed power requires the interface acceleration between the vehicle seat and the passenger. This acceleration can be obtained experimentally, or can be calculated from the road profile by determining the vehicle transfer function. A profilometer vehicle which simultaneously measured road profile and passenger/seat accelerations was used for data gathering. Absorbed power was calculated and distributed into amplitude and frequency bands, using random signal description technique called amplitude frequency distribution. Utilizing this format results in a matrix showing which amplitude and frequency bands contribute the greatest discomfort to the ride. The roughness effects of six roads were ranked in proper order by the passenger comfort prediction.

Copyright © 1974 by ASME
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