Parallel Vibration Isolation Platform Using Magnetorheological Technology

Abstract:

Within this work, a six-axis parallel vibration isolation platform with semi-active control ability is investigated. Traditional magnetorheological (MR) dampers could supply large output force and long stroke, but it also comes with a large self-weight. This problem is more serious when several MR dampers are needed in a parallel platform. Firstly, a double-piston MR damper have been developed, which will brings a small self-weight feature to the damper. Hyperbolic tangent model have been used to describe damper's nonlinear hysteresis. Using six of this double-piston MR damper, a parallel vibration isolation platform based on a cubic Stewart platform mechanism has been designed. Dynamical model of this platform has been built and simulated. Numerical simulation results in frequency domain indicate that the parallel semi-active vibration isolation platform has desirable vibration isolation properties in all six axes.

• Periodical: Applied Mechanics and Materials (Volume 574)
• Pages: 596-602
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.574.596
• Online since: July 2014
• Authors: Qiang Wang, Zhao Bo Chen, Mehdi Ahmadian, Wen Tao Liu
• Keywords: Hyperbolic Tangent Model, Magnetorheological (MR) Damper, Semi-Active, Six-Axis, Stewart Platform Mechanism

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