Author(s):
Moutinho, C. 
; Cunha, A. ; Caetano, E.
Date: 2005
Persistent ID: http://hdl.handle.net/10216/71416
Origin: Repositório Aberto da Universidade do Porto
Document details
Implementation of an Active Damping System to Reduce Harmonic Vibrations in a 3...
Description
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.
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.
Document Type
Conference Object
Language Portuguese
Language Portuguese
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