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City bus seat vibration analysis using 6-axis accelerometer and gyroscope sensors
David Eager1, Md Imam Hossain2, Anna Lidfors Lindqvist1
1Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, 2007, Australia.
Scientific Reports
|December 2, 2024
Summary
City bus seat vibration was analyzed using acceleration data. Peak vibrations were identified in longitudinal, lateral, and vertical directions, with vertical acceleration being the highest.
Area of Science:
- Transportation Engineering
- Vibration Analysis
- Human Factors
Background:
- City bus seat vibration is a significant factor affecting passenger comfort and vehicle design.
- Understanding vibration patterns is crucial for improving the riding experience.
Purpose of the Study:
- To analyze different modes and cycles of city bus seat vibration.
- To identify peak vibration modes within typical driving patterns.
- To quantify acceleration peak magnitudes in three axes.
Main Methods:
- Utilized a 6-axis inertial measurement unit with accelerometer and gyroscope sensors.
- Collected data from multiple operating city buses.
- Applied algorithmic filters to analyze g-force peaks in time-series data.
Main Results:
- Identified key vibration modes and cycles in city bus operations.
- Root mean square acceleration magnitude was approximately 0.33 g.
- 20% of peak acceleration cycles exceeded 0.20 g (longitudinal), 0.18 g (lateral), and 0.27 g (vertical).
Conclusions:
- Vertical acceleration peaks were the most significant.
- Jerk may be a more accurate measure of passenger discomfort than acceleration.
- Results provide a reference for future research and mitigation strategies for bus seat vibration.
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