Vibration Damping Modeling of Stewart Platform through Newton-Euler Approach

摘要

A closed-form dynamic model of a 6-UPS (universal-prismatic-spherical) Stewart platform suitable for modeling and analyzing the vibration damping of the 6-UPS Stewart platform based systems is developed through Newton-Euler dynamic approach. In the formulation, the external excitations on the base-platform of the 6-UPS Stewart platform are considered and the developed model is in a closed form, so the model can not only be used to model and analyze the vibration damping of the 6-UPS Stewart platform based systems when the base-platform is exerted external excitations, but also can be used to design the control algorithms of the 6-UPS Stewart platform based systems to realize the feedback control of the vibration damping. The dynamic formulation is implemented for the modeling and analyzing of the vibration damping of a 6-UPS Stewart platform based system and some numerical simulation results are also presented.