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Application of the MEMS Accelerometer as the Position Sensor in Linear Electrohydraulic Drive

Various distance sensors are used as measuring elements for positioning linear electrohydraulic drives. The most common are magnetostrictive transducers or linear variable differential transformer (LVDT) sensors mounted inside the cylinder. The displacement of the actuator’s piston rod is proportion...

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Detalles Bibliográficos
Autor principal: Rybarczyk, Dominik
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7924068/
https://www.ncbi.nlm.nih.gov/pubmed/33672609
http://dx.doi.org/10.3390/s21041479
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author Rybarczyk, Dominik
author_facet Rybarczyk, Dominik
author_sort Rybarczyk, Dominik
collection PubMed
description Various distance sensors are used as measuring elements for positioning linear electrohydraulic drives. The most common are magnetostrictive transducers or linear variable differential transformer (LVDT) sensors mounted inside the cylinder. The displacement of the actuator’s piston rod is proportional to the change in the value of the current or voltage at the output from the sensor. They are characterized by relatively low measurement noise. The disadvantage of presented sensors is the need to mount them inside the cylinders and the high price. The article presents preliminary research on the replacement of following sensors and the use of a microelectromechanical system (MEMS) accelerometer as a measuring element in the electrohydraulic drive control system. The control consisted of two phases: at first, the signal from the acceleration sensor was analyzed during the actuator movement, based on the value determined from the simplified model implemented on the controller. In the range of motion in which the dynamics were the lowest, the signal was integrated and the obtained value was used in the second phase of motion. In the correction phase, a new set point was determined. Conducting the research required building a dedicated research stand. The author conducted the simulation and experimental research.
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spelling pubmed-79240682021-03-03 Application of the MEMS Accelerometer as the Position Sensor in Linear Electrohydraulic Drive Rybarczyk, Dominik Sensors (Basel) Communication Various distance sensors are used as measuring elements for positioning linear electrohydraulic drives. The most common are magnetostrictive transducers or linear variable differential transformer (LVDT) sensors mounted inside the cylinder. The displacement of the actuator’s piston rod is proportional to the change in the value of the current or voltage at the output from the sensor. They are characterized by relatively low measurement noise. The disadvantage of presented sensors is the need to mount them inside the cylinders and the high price. The article presents preliminary research on the replacement of following sensors and the use of a microelectromechanical system (MEMS) accelerometer as a measuring element in the electrohydraulic drive control system. The control consisted of two phases: at first, the signal from the acceleration sensor was analyzed during the actuator movement, based on the value determined from the simplified model implemented on the controller. In the range of motion in which the dynamics were the lowest, the signal was integrated and the obtained value was used in the second phase of motion. In the correction phase, a new set point was determined. Conducting the research required building a dedicated research stand. The author conducted the simulation and experimental research. MDPI 2021-02-20 /pmc/articles/PMC7924068/ /pubmed/33672609 http://dx.doi.org/10.3390/s21041479 Text en © 2021 by the author. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Rybarczyk, Dominik
Application of the MEMS Accelerometer as the Position Sensor in Linear Electrohydraulic Drive
title Application of the MEMS Accelerometer as the Position Sensor in Linear Electrohydraulic Drive
title_full Application of the MEMS Accelerometer as the Position Sensor in Linear Electrohydraulic Drive
title_fullStr Application of the MEMS Accelerometer as the Position Sensor in Linear Electrohydraulic Drive
title_full_unstemmed Application of the MEMS Accelerometer as the Position Sensor in Linear Electrohydraulic Drive
title_short Application of the MEMS Accelerometer as the Position Sensor in Linear Electrohydraulic Drive
title_sort application of the mems accelerometer as the position sensor in linear electrohydraulic drive
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7924068/
https://www.ncbi.nlm.nih.gov/pubmed/33672609
http://dx.doi.org/10.3390/s21041479
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