The present study has established equal sensation curves for steering wheel handarm
rotational vibration. Psychophysical response tests of 20 participants were
performed using the category-ratio Borg CR10 scale procedure. The test stimuli
used were sinusoidal vibrations at 22 third octave band centre frequencies in the
range from 3 to 400 Hz, with amplitudes in the range from 0.06 to 30 m/s2 r.m.s. A
multivariate regression analysis was performed on the mean Borg CR10 intensity
values as a function of the two independent parameters of the vibration frequency
and amplitude. The results suggested a nonlinear dependency of the perceived
intensity on both the steering wheel rotational vibration frequency and amplitude. A
sixth-order polynomial model has been proposed as a best fit regression model
