In order to attenuate the pulsation of the hydraulic systems, the string hydraulic pulsation attenuator is proposed using the principle of mechanical vibration absorption. We present a new type of mechanical structure that can attenuate the pulsation as well as reduce the noise. Elastic strings and fluid can be seen as a forced vibratory system. Resonant cavities isolated by inner pipes of the string hydraulic pulsation attenuator and the damping orifices on inner pipes constitute the Helmholtz resonant structure. It’s a way to realize the effect of structural resonant and fluid resonant filtering. Based on the dynamic characteristics of the pipeline, the transfer matrix model of the string hydraulic pulsation attenuator is established. The attenuation performance of the string hydraulic pulsation attenuator is evaluated by insertion loss. In MATLAB software, we simulate the pulsating characteristics to analyze the relationship between the main structural parameters and the characteristics of pulsating pressure. The simulated theoretical results are compared and analyzed, which indicates that the string hydraulic pulsation attenuator is very effective for filtering in a very wide frequency range. Pulsation attenuating is good for improving the life of components and the working reliability. Noise reducing is good for people’s health at the working-site. Especially under some secret circumstances, controlling noise is a must.
- Dynamic Systems and Control Division
Filtering Characteristics of String Hydraulic Pulsation Attenuator
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Shang, X, Zhou, H, Xie, A, & Zhu, J. "Filtering Characteristics of String Hydraulic Pulsation Attenuator." Proceedings of the ASME 2017 Dynamic Systems and Control Conference. Volume 3: Vibration in Mechanical Systems; Modeling and Validation; Dynamic Systems and Control Education; Vibrations and Control of Systems; Modeling and Estimation for Vehicle Safety and Integrity; Modeling and Control of IC Engines and Aftertreatment Systems; Unmanned Aerial Vehicles (UAVs) and Their Applications; Dynamics and Control of Renewable Energy Systems; Energy Harvesting; Control of Smart Buildings and Microgrids; Energy Systems. Tysons, Virginia, USA. October 11–13, 2017. V003T22A004. ASME. https://doi.org/10.1115/DSCC2017-5312
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