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

• Published in: Journal of engineering (Stevenage, England) Vol. 2019; no. 13; pp. 98 - 101
• Main Authors: Guo, Ning, Wang, Fan, Wang, Linxiang
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.01.2019; Wiley
• Subjects: 19th International Conference of Fluid Power and Mechatronic Control Engineering; elastic constants; hydraulic active compensation; hydraulic systems; low-frequency vibration isolation; low-frequency vibration isolator; natural frequency; vibration isolation; natural frequency; low-frequency vibration isolator; elastic constants; vibration isolation; low-frequency vibration isolation; hydraulic systems; hydraulic active compensation
• ISSN: 2051-3305; 2051-3305
• DOI: 10.1049/joe.2018.8955

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.