Cargando…

Trajectory Control for Vibrating Screen with Magnetorheological Dampers

The article presents a method of vibrating screen trajectory control based on MR (magnetorheological) dampers applied in a screen suspension. A mathematical description of the dynamic screen model was derived, and parameters of this model were estimated based on experimental data from a semi-industr...

Descripción completa

Detalles Bibliográficos
Autores principales: Ogonowski, Szymon, Krauze, Piotr
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9185654/
https://www.ncbi.nlm.nih.gov/pubmed/35684845
http://dx.doi.org/10.3390/s22114225
_version_ 1784724766882529280
author Ogonowski, Szymon
Krauze, Piotr
author_facet Ogonowski, Szymon
Krauze, Piotr
author_sort Ogonowski, Szymon
collection PubMed
description The article presents a method of vibrating screen trajectory control based on MR (magnetorheological) dampers applied in a screen suspension. A mathematical description of the dynamic screen model was derived, and parameters of this model were estimated based on experimental data from a semi-industrial vibrating screen. The investigated screen included a single mechanical exciter with unbalanced masses, generating a circular vibration trajectory and operating with over-resonant frequency close to 19 Hz. It was experimentally tested in several phases of operation: start-up, nominal operation at a target vibration frequency and shutdown. The implemented screen model was further extended and included several MR dampers oriented horizontally and vertically in the form of Bouc–Wen models. The Bouc–Wen model was identified based on experiments carried out for an MR damper subjected to harmonic excitations generated by the MTS (material testing system). Dominant frequencies of excitation varied by up to 20 Hz during experiments. The main novelty of the reported solution is that according to the proposed control algorithm, the desired forces generated by MR dampers emulate an additional virtual mechanical exciter of the vibrating screen. In turn, it interacts with the available exciter, resulting in conversion of the trajectory from circular to linear, which was validated in the presented study. For the purpose of simulation accuracy, the desired control force was additionally limited within the simulator by MR damper dissipative domain, which maps the constraints of a semi-active damper. The presented approach allows one to obtain a close to linear trajectory with only one exciter and with semi-active control of suspension stiffness. The results were successfully repeated with different configurations of desired trajectory, indicating that the effectiveness of the desired linear trajectory generation depends on its orientation. The reported findings may lead to the design of new vibrating screen constructions, taking advantage of the semi-active control of a suspension in the attenuation of disturbance resulting from varying processed material parameters.
format Online
Article
Text
id pubmed-9185654
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-91856542022-06-11 Trajectory Control for Vibrating Screen with Magnetorheological Dampers Ogonowski, Szymon Krauze, Piotr Sensors (Basel) Article The article presents a method of vibrating screen trajectory control based on MR (magnetorheological) dampers applied in a screen suspension. A mathematical description of the dynamic screen model was derived, and parameters of this model were estimated based on experimental data from a semi-industrial vibrating screen. The investigated screen included a single mechanical exciter with unbalanced masses, generating a circular vibration trajectory and operating with over-resonant frequency close to 19 Hz. It was experimentally tested in several phases of operation: start-up, nominal operation at a target vibration frequency and shutdown. The implemented screen model was further extended and included several MR dampers oriented horizontally and vertically in the form of Bouc–Wen models. The Bouc–Wen model was identified based on experiments carried out for an MR damper subjected to harmonic excitations generated by the MTS (material testing system). Dominant frequencies of excitation varied by up to 20 Hz during experiments. The main novelty of the reported solution is that according to the proposed control algorithm, the desired forces generated by MR dampers emulate an additional virtual mechanical exciter of the vibrating screen. In turn, it interacts with the available exciter, resulting in conversion of the trajectory from circular to linear, which was validated in the presented study. For the purpose of simulation accuracy, the desired control force was additionally limited within the simulator by MR damper dissipative domain, which maps the constraints of a semi-active damper. The presented approach allows one to obtain a close to linear trajectory with only one exciter and with semi-active control of suspension stiffness. The results were successfully repeated with different configurations of desired trajectory, indicating that the effectiveness of the desired linear trajectory generation depends on its orientation. The reported findings may lead to the design of new vibrating screen constructions, taking advantage of the semi-active control of a suspension in the attenuation of disturbance resulting from varying processed material parameters. MDPI 2022-06-01 /pmc/articles/PMC9185654/ /pubmed/35684845 http://dx.doi.org/10.3390/s22114225 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ogonowski, Szymon
Krauze, Piotr
Trajectory Control for Vibrating Screen with Magnetorheological Dampers
title Trajectory Control for Vibrating Screen with Magnetorheological Dampers
title_full Trajectory Control for Vibrating Screen with Magnetorheological Dampers
title_fullStr Trajectory Control for Vibrating Screen with Magnetorheological Dampers
title_full_unstemmed Trajectory Control for Vibrating Screen with Magnetorheological Dampers
title_short Trajectory Control for Vibrating Screen with Magnetorheological Dampers
title_sort trajectory control for vibrating screen with magnetorheological dampers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9185654/
https://www.ncbi.nlm.nih.gov/pubmed/35684845
http://dx.doi.org/10.3390/s22114225
work_keys_str_mv AT ogonowskiszymon trajectorycontrolforvibratingscreenwithmagnetorheologicaldampers
AT krauzepiotr trajectorycontrolforvibratingscreenwithmagnetorheologicaldampers