Next Article in Journal
Experimental Characterization of Friction in a Negative Stiffness Nonlinear Oscillator
Previous Article in Journal
H 2 and H Optimal Control Strategies for Energy Harvesting by Regenerative Shock Absorbers in Cars
Open AccessArticle

Difference Thresholds for the Perception of Sinusoidal Vertical Stimuli of Whole-Body Vibrations in Ranges of Amplitude and Frequency Relevant to Ride Comfort

1
Institute of Vehicle System Technology, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
2
Dr. Ing. h.c. F. Porsche AG, 71287 Weissach, Germany
*
Author to whom correspondence should be addressed.
Vibration 2020, 3(2), 116-131; https://doi.org/10.3390/vibration3020010
Received: 5 March 2020 / Revised: 30 May 2020 / Accepted: 1 June 2020 / Published: 3 June 2020
(This article belongs to the Special Issue Human Response to Vibration)
Minor differences in the vibration characteristics of a vehicle may greatly influence the comfort experienced by the driver. Therefore, such characteristics are significant in the process of vehicle development. In this experimental study, just-noticeable differences were determined for sinusoidal vertical whole-body vibrations at the frequencies 1.3 Hz and 6.0 Hz, and for the vibration amplitudes 0.2 m/s², 0.5 m/s² and 1.2 m/s². The stimulation set up was realised using a test rig constituting a seating position similar to that in a real vehicle environment. A transformed one-up-three-down method, in conjunction with a two-interval forced choice procedure, was used to determine difference thresholds, in accordance with Weber’s Law, for 14 test subjects. Median relative difference thresholds in the range of 6.7% to 11.0% were observed, and were examined for statistical significance (α < 0.05) and practical importance on amplitude and frequency, with respect to this law. The results showed a frequency-dependence at the lowest vibration amplitude and an amplitude-dependence for both frequencies from a statistical point of view. However, the amplitude-dependence at 6.0 Hz was considered as negligible for practical use. View Full-Text
Keywords: NVH; human factors; whole-body vibrations; difference thresholds; vehicle motion; ride comfort; Weber’s Law NVH; human factors; whole-body vibrations; difference thresholds; vehicle motion; ride comfort; Weber’s Law
Show Figures

Figure 1

MDPI and ACS Style

Festa, M.; Durm, T.; Lünebach, M.; Gauterin, F. Difference Thresholds for the Perception of Sinusoidal Vertical Stimuli of Whole-Body Vibrations in Ranges of Amplitude and Frequency Relevant to Ride Comfort. Vibration 2020, 3, 116-131.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Back to TopTop