On-board electrical components can cause printed circuit board (PCB) vibration, thus generating audio noise if the electrical noise is in the audible frequency range. The electrical component-induced vibration can be equated to an external force applied to the PCB. This article presents a novel methodology to extract the equivalent force of electrical components on a PCB to study board vibration and potential acoustic noise problems. The method is based on a combination of measurement and simulation, wherein PCB vibration is used as the medium in the extraction process. The methodology is validated by the correlation of PCB vibration pattern, frequency, and amplitude with a known electromagnetic force applied to the PCB.
Y. Ding et al., "Equivalent Force Extraction Methodology For Electrical Component Induced PCB Vibration," IEEE Transactions on Electromagnetic Compatibility, Institute of Electrical and Electronics Engineers, Jan 2023.
The definitive version is available at https://doi.org/10.1109/TEMC.2023.3319272
Electrical and Computer Engineering
Keywords and Phrases
Damping; Electric variables measurement; Electromagnetic force; Force; force extraction methodology; Force measurement; harmonic analysis; laser doppler vibrometer (LDV); modal analysis; printed circuit board (PCB) vibration; Resonant frequency; Vibration measurement; Vibrations
International Standard Serial Number (ISSN)
Article - Journal
© 2023 Institute of Electrical and Electronics Engineers, All rights reserved.
01 Jan 2023