Extended delayed resonators – Design and experimental verification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00304907" target="_blank" >RIV/68407700:21220/17:00304907 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21730/17:00304907

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.mechatronics.2016.10.019" target="_blank" >http://dx.doi.org/10.1016/j.mechatronics.2016.10.019</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mechatronics.2016.10.019" target="_blank" >10.1016/j.mechatronics.2016.10.019</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Extended delayed resonators – Design and experimental verification

Popis výsledku v původním jazyce

The key contribution of the paper is in the modification of the well-known delayed resonator concept for vibration suppression using both delayed and non-delayed acceleration feedback control laws together. We further improve the classical resonator setting with lumped delay introducing a distributed delay structure into the control law. It is known that the operable frequency ranges for the delayed resonators are relatively narrow, taking into account both the stability and implementation constraints. As the key result of this paper, in order to widen the operable frequency range, the resonator's feedback is extended by including a non-delayed part to adjust virtually the mass and thus the natural frequency of the active absorber. The proposed extension takes into consideration also the existence of feedback delay and filters to reduce the measurement noise, and retain the simplicity of active controlled resonator tuning against excitations with time varying frequencies. The properties and performance of the resulting algorithms are compared with the delay free PI (proportional and integral) feedback control law. It is shown that the delay-based resonators are easier to implement and can better deal with the measurement noise compared to PI. Spectral theory of retarded and neutral time delay systems are applied to perform a thorough analysis of the resonators. The key theoretical results are validated on a laboratory set-up with voice-coil magnetic shakers.

Název v anglickém jazyce

Extended delayed resonators – Design and experimental verification

Popis výsledku anglicky

The key contribution of the paper is in the modification of the well-known delayed resonator concept for vibration suppression using both delayed and non-delayed acceleration feedback control laws together. We further improve the classical resonator setting with lumped delay introducing a distributed delay structure into the control law. It is known that the operable frequency ranges for the delayed resonators are relatively narrow, taking into account both the stability and implementation constraints. As the key result of this paper, in order to widen the operable frequency range, the resonator's feedback is extended by including a non-delayed part to adjust virtually the mass and thus the natural frequency of the active absorber. The proposed extension takes into consideration also the existence of feedback delay and filters to reduce the measurement noise, and retain the simplicity of active controlled resonator tuning against excitations with time varying frequencies. The properties and performance of the resulting algorithms are compared with the delay free PI (proportional and integral) feedback control law. It is shown that the delay-based resonators are easier to implement and can better deal with the measurement noise compared to PI. Spectral theory of retarded and neutral time delay systems are applied to perform a thorough analysis of the resonators. The key theoretical results are validated on a laboratory set-up with voice-coil magnetic shakers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/LH12066" target="_blank" >LH12066: Spektrální metody v návrhu aktivního tlumení vibrací a řízení systémů se zpožděními ve zpětných vazbách</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Mechatronics

ISSN

0957-4158

e-ISSN

—

Svazek periodika

41

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

16

Strana od-do

29-44

Kód UT WoS článku

000394076000003

EID výsledku v databázi Scopus

2-s2.0-84998707011