Implementation of an active damping system to reduce harmonic vibrations in a 3DOF model

• Type: Article in International Conference Proceedings Book
• Date: 2005

Authors

Carlos Moutinho (Author) FEUP; Álvaro Cunha (Author) FEUP; Elsa Caetano (Author) FEUP

Conference proceedings International

Title: II ECCOMAS Thematic Conference on Smart Structures and Materials, Lisboa, 2005

II ECCOMAS Thematic Conference on Smart Structures and Materials

Lisboa, 2005

Scientific classification

FOS: Engineering and technology > Civil engineering

Other information

Abstract (EN): This paper describes the work for a real implementation of an active damping system to reduce harmonic vibrations in a plane frame physical model with 3 degrees-of-freedom. For this purpose, it is suggested the use of an active mass damper commanded by a derivate controller which has the effect of increasing the modal damping coefficients in correspondence with a specific gain value. This control gain, as well as the system stability, was evaluated using the root-locus technique. The efficiency of the proposed control system to achieve pre-defined damping ratios was verified experimentally, by analyzing the free decay responses of the system after being excited at resonant frequencies.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 20