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Experimental Validation of Frame-Dependent Gyroscopic Frequency Splitting in a Freely Rotating Tire Using Wireless MEMS Accelerometers and Scanning Laser Doppler Vibrometer KU Leuven
- Format:
- Book
- Conference/Event
- Author/Creator:
- del Fresno Zarza, Javier, author.
- Naets, Frank, author.
- Conference Name:
- 14th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference (2026-06-17 : Graz, Austria)
- Language:
- English
- Subjects (All):
- Frames.
- Lasers.
- Microelectromechanical devices (MEMS).
- Kinematics.
- Measurements.
- Identification.
- Tires.
- Local Subjects:
- Frames.
- Lasers.
- Microelectromechanical devices (MEMS).
- Kinematics.
- Measurements.
- Identification.
- Tires.
- Physical Description:
- 1 online resource
- Place of Publication:
- Warrendale, PA SAE International 2026
- Summary:
- Gyroscopic effects split circumferential traveling-wave resonances of rotating structures into forward and backward branches. This work first analyzes the splitting in the co-rotating (Lagrangian) frame to provide physical intuition for the evolution of the two branches with spin speed. A transformation to the inertial (Eulerian) frame is then derived, showing that the observed frequencies are shifted by a kinematic Doppler-like term that acts with opposite sign on the forward and backward waves, leading to different Campbell-diagram slopes depending on the observation frame. The resulting framework is validated experimentally on a freely rotating, unloaded tire using two complementary sensing modalities: wireless on-tire accelerometers (co-rotating view) and a scanning laser Doppler vibrometer (inertial view). A frequency-domain SVD-based identification (FDD/ODS-SVD) is used to extract poles and deformation patterns over a range of spin speeds, enabling Campbell diagrams in both frames. The application of the proposed transformation maps the co-rotating branches onto the inertial observations, yielding consistent forward/backward splitting between the two measurement systems
- Notes:
- Vendor supplied data
- Access Restriction:
- Restricted for use by site license
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