All-Pass Filters in the Systems of Active Vibration Control of Weakly-Damped Systems

The problem of active vibration control of weakly damped mechanical structures is potentially unstable modes of vibrations due to the positive feedback for some vibration modes. The paper will discuss the change of positive feedback on the negative one using all-pass discrete-time filters. These fil...

Full description

Saved in:
Bibliographic Details
Published inStrojnícky casopis - Journal of Mechanical Engineering Vol. 68; no. 4; pp. 65 - 74
Main Authors Jiří, Tůma, Pavel, Šuránek, Stanislav, Žiaran
Format Journal Article
LanguageEnglish
Published Sciendo 01.12.2018
Subjects
active vibration control
all-pass filter
piezo-actuator
Online AccessGet full text

Cover

More Information
Summary:The problem of active vibration control of weakly damped mechanical structures is potentially unstable modes of vibrations due to the positive feedback for some vibration modes. The paper will discuss the change of positive feedback on the negative one using all-pass discrete-time filters. These filters can be arranged in a cascade to stabilize many potentially unstable modes. The piezoelectric actuator as a source of force is used to damp vibration.
ISSN:2450-5471
2450-5471
DOI:10.2478/scjme-2018-0048