Fremgangsmåde og indretning til reduktion af svingninger i en vindmøllevinge.

摘要

The present invention relates to a method for reduction of vibrations in a windmill blade so that the loads on the blade and on the remaining part of the mill structure are reduced. According to the invention this is achieved by changing the aerodynamic properties of the blade as a function of the acceleration and/or speed in the direction of rotation and/or out of the rotor plane of a slidable device. The invention also relates to a device for changing the vibrations of a windmill blade, said device in a first embodiment being characteristic in that the device is a mass (13) which via a lever system (14) is pivotably mounted about an axis (14a) extending in the longitudinal direction of the blade so that by pivoting in a direction crosswise of the rotor plane the mass (13) will move a flap (15) through the lever system (14) for reduced lift on the blade.