| 主权项 |
1. A system for reducing vibration in a wind turbine, the system comprising:
a mass structure having at least one hole extending therethrough; a rod having a top threaded portion, an upper level stop disposed on or below the top threaded portion, and a fixed lower level stop disposed below the upper level stop; the top threaded portion extending through the hole in the mass structure, with the mass structure resting on the upper level stop, wherein the mass structure has a designed weight and shape that, in combination with the adjustable axial distance between the upper level stop and the lower level stop, is designed to give the system a specifically tuned natural frequency; and a base, the base having an aperture designed for receipt of the lower level stop therein, the base configured for attachment to a component of the wind turbine. |
