Active absorber for low-frequency vibrating structures

US9683621B2 · kind B2 · utility

Assignee

• Integrated Dynamics Engineering GmbH · DE

Inventors

• Peter A. Kropp · Nersingen, DE
• Wolfram Sinn · Offenbach, DE

Key dates

• Filing date: Aug 20, 2013
• Grant date: Jun 20, 2017
• Expiry date: Sep 22, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V5/22
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An active vibration absorber is provided for damping vibrations of a cantilevered portion of a support structure. The vibration absorber comprises a mass, a drive and a control device. The mass is coupled without using a spring and through the drive to a fastening means for fastening the drive to the support structure, so that upon a movement of the mass relative to the fastening means an inertial force caused by this movement is directly transmitted through the drive to the fastening means. The control device comprising a motion sensor is adapted to control the drive in function of a signal from the motion sensor. The active vibration absorber is designed to damp especially low-frequency vibrating structures including more than one mass-spring element so that the vibration amplitude thereof is significantly reduced.