Abstract
The measured wall pressure of high-speed train will be affected by train vibration due to the complex test environment. This paper is devoted to the investigation of the influence of vibration acceleration on the wall pressure measurement of high-speed trains. Aiming at the vibration-induced effect of piezoresistive pressure sensors, a vibration-pressure coupling laboratory platform is established. The output of the piezoresistive pressure sensor under different frequency vibration loads is obtained from the platform. The vibration and pressure sensor output signals are separated through an EEMD-based method. By the analysis of different vibration loads and the pressure sensor output signal, their internal relations are obtained. Moreover, the results provide theoretical guidance for measuring high-speed train wall pressure and the pressure under other acceleration loading environments.
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ACKNOWLEDGMENTS
This work was supported by the National Natural Science Foundation of China (grants nos. 51975487 and 51475387).
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Yuxiao, C., Chunjun, C. & Chao, D. Research on Vibration Effect of Piezoresistive Pressure Sensor. Instrum Exp Tech 65, 653–667 (2022). https://doi.org/10.1134/S0020441222040170
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DOI: https://doi.org/10.1134/S0020441222040170