On-Device Smartphone Vibration Analysis for Passenger-Car Ride Comfort Evaluation.

Authors

Mahalingam Nainaragaram Ramasamy, Jiří Tůma, Narendren Senthil, Aleš Slíva, Jan Dizo

Published in

Sensors (Basel, Switzerland). Volume 26. Issue 20. Oct 17, 2026. Epub Oct 17, 2026.

Abstract

This study presents a smartphone-based approach for passenger-car ride comfort evaluation using an Android application that performs vibration acquisition and signal processing directly on the device. The Ride Comfort application records tri-axial acceleration and computes FFT, Welch power spectral density (PSD) with a 66.66% overlapping Hann window, 1/3-octave spectra, and frequency-weighted RMS acceleration following ISO 2631-1 principles. Six comparative field tests were conducted with an Opel Astra, Skoda Octavia, and Volkswagen Passat at approximately 30 km/h on Track A and 50 km/h on Track B. At 30 km/h, the Octavia, Passat, and Astra recorded a_w values of 0.668, 0.712, and 0.812 m·s^-2, respectively. At 50 km/h, the Passat, Octavia, and Astra recorded 0.272, 0.432, and 0.539 m·s^-2, respectively. Five repeatability tests with a Skoda Fabia at approximately 90 km/h on a fixed 3 km highway segment yielded a mean a_w of 0.169 m·s^-2, SD of 0.022 m·s^-2, and CoV of 13.0%. The results demonstrate the feasibility of an integrated smartphone workflow for ride comfort assessment and repeatable measurement under a fixed vehicle-road-speed condition.

PMID:
42944454
Bibliographic data and abstract were imported from PubMed on 27 Oct 2026.

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