The Journal of Engineering (Oct 2018)

Design and analysis of an active-controlled hydraulic low-frequency vibration isolator

  • Ning Guo,
  • Fan Wang,
  • Linxiang Wang

DOI
https://doi.org/10.1049/joe.2018.8955

Abstract

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This study proposes an active-controlled hydraulic low-frequency vibration isolator. The vibration isolator can achieve large equivalent mass and quasi-zero dynamic stiffness by combining the fluid inerter with the hydraulic active compensation. Thus, good vibration isolation performance at ultra-low frequency can be realised. The model for the dynamics of the device is set up. The principle of low-frequency vibration isolation is explicated. The natural frequency and its influencing factors are analysed. Finally, preliminary experimental research works are carried out. The results indicate that low-frequency vibration can be effectively isolated by the device proposed in this study.

Keywords