Vibration isolation of a double-layered Stewart platform with local oscillators

Abstract

Inspired by the Stewart platform, the theoretical model of a double-layered Stewart platform with local oscillators is proposed and its performance is studied based on numerical simulations and experimental methods. To validate the performance of the proposed technique we perform a vibration experiment, where the vibration isolation performance is estimated based on the ADAMS software. From the experimental analysis, we study the influence of the model parameters on the vibration isolation performance and highlight the advantages of the proposed double-layered platform over the traditional single-layered ones. The experimental results demonstrate that the oscillators can effectively suppress the transmissibility near the resonant frequency, which benefits the vibration isolation performance of the system.

Highlights

• A double-layered Stewart platform with local oscillators is designed and manufactured.

• The advantages of the proposed platform over the single-layered ones are highlighted.

• The oscillators can effectively suppress the transmissibility near the resonant frequency.

• The proposed platform has better low-frequency vibration isolation performance.

Keywords:

• Stewart platform
• local oscillator
• vibration isolation
• transmissibility
• experiment

Acknowledgments

The authors would like to thank the useful comments and constructive suggestions from the handling editor and anonymous reviewers, which do improve the quality of the manuscript.

Additional information

Funding

This research is supported by the National Natural Science Foundation of China (Nos. 12072086 and 11761131006).