A SYSTEM FOR DAMPING OSCILLATIONS IN A STRUCTURE

摘要

A system for damping torsional oscillations in a structure, the system comprising: a first unbalanced mass arrangement rotatable about a first rotation axis to generate a first rotating unbalance vector; a second unbalanced mass arrangement rotatable about a second rotation axis to generate a second rotating unbalance vector; and control means configured to rotate the first and second unbalanced mass arrangements at the same frequency; wherein the first and second unbalanced mass arrangements are configured such that the first rotating unbalance vector is opposed to the second rotating unbalance vector, thereby generating a torsional moment that opposes the torsional oscillation of the structure.