Extended PKM Fixturing System for Micro-Positioning and Vibration Rejection in Machining Application

The paper aims to present a mechatronic device able to micro-position the workpiece and to reject disturbances due to machining operation. A decoupling method is proposed for a parallel kinematic machine (PKM) fixturing platform composed by a 3-DoF flexure-based piezo-actuated mechanism. The paralle...

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Autores principales:	Francesco Aggogeri, Nicola Pellegrini, Franco Luis Tagliani
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	parallel kinematic machines flexure-based mechanism piezoelectric actuator vibration rejection set-point following Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/7257427d93ab4907802716dcdd3a9363
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spelling	oai:doaj.org-article:7257427d93ab4907802716dcdd3a93632021-11-25T18:58:55ZExtended PKM Fixturing System for Micro-Positioning and Vibration Rejection in Machining Application10.3390/s212277391424-8220https://doaj.org/article/7257427d93ab4907802716dcdd3a93632021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7739https://doaj.org/toc/1424-8220The paper aims to present a mechatronic device able to micro-position the workpiece and to reject disturbances due to machining operation. A decoupling method is proposed for a parallel kinematic machine (PKM) fixturing platform composed by a 3-DoF flexure-based piezo-actuated mechanism. The parallel platform, with a vertical motion and two rotations, is described and its kinematics and dynamics are studied. The coupling undesirable effect is investigated based on a set of poses. To improve the quasi-static regulator model for a set-point following system, a bump less switching controller and a fine-tuning procedure, to estimate the parameter uncertainty and enable the external disturbance containment in an extended broadband frequency range, are presented. The platform and the piezo-actuator controllers are modelled based on a gain scheduling, standard ISA form method, to guarantee the stability. The accuracy is demonstrated through a set of simulations and experimental comparisons. A sensitivity analysis that evaluates the tracking performance and the disturbance rejection based on the number of signal amplitudes, frequencies, and phases is discussed. A validation phase has shown that the developed architecture presents a steady state error lower than 1.2 µm, a vibration reduction of 96% at 1130 Hz with a maximum resolving time of 6.60 ms.Francesco AggogeriNicola PellegriniFranco Luis TaglianiMDPI AGarticleparallel kinematic machinesflexure-based mechanismpiezoelectric actuatorvibration rejectionset-point followingChemical technologyTP1-1185ENSensors, Vol 21, Iss 7739, p 7739 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	parallel kinematic machines flexure-based mechanism piezoelectric actuator vibration rejection set-point following Chemical technology TP1-1185
spellingShingle	parallel kinematic machines flexure-based mechanism piezoelectric actuator vibration rejection set-point following Chemical technology TP1-1185 Francesco Aggogeri Nicola Pellegrini Franco Luis Tagliani Extended PKM Fixturing System for Micro-Positioning and Vibration Rejection in Machining Application
description	The paper aims to present a mechatronic device able to micro-position the workpiece and to reject disturbances due to machining operation. A decoupling method is proposed for a parallel kinematic machine (PKM) fixturing platform composed by a 3-DoF flexure-based piezo-actuated mechanism. The parallel platform, with a vertical motion and two rotations, is described and its kinematics and dynamics are studied. The coupling undesirable effect is investigated based on a set of poses. To improve the quasi-static regulator model for a set-point following system, a bump less switching controller and a fine-tuning procedure, to estimate the parameter uncertainty and enable the external disturbance containment in an extended broadband frequency range, are presented. The platform and the piezo-actuator controllers are modelled based on a gain scheduling, standard ISA form method, to guarantee the stability. The accuracy is demonstrated through a set of simulations and experimental comparisons. A sensitivity analysis that evaluates the tracking performance and the disturbance rejection based on the number of signal amplitudes, frequencies, and phases is discussed. A validation phase has shown that the developed architecture presents a steady state error lower than 1.2 µm, a vibration reduction of 96% at 1130 Hz with a maximum resolving time of 6.60 ms.
format	article
author	Francesco Aggogeri Nicola Pellegrini Franco Luis Tagliani
author_facet	Francesco Aggogeri Nicola Pellegrini Franco Luis Tagliani
author_sort	Francesco Aggogeri
title	Extended PKM Fixturing System for Micro-Positioning and Vibration Rejection in Machining Application
title_short	Extended PKM Fixturing System for Micro-Positioning and Vibration Rejection in Machining Application
title_full	Extended PKM Fixturing System for Micro-Positioning and Vibration Rejection in Machining Application
title_fullStr	Extended PKM Fixturing System for Micro-Positioning and Vibration Rejection in Machining Application
title_full_unstemmed	Extended PKM Fixturing System for Micro-Positioning and Vibration Rejection in Machining Application
title_sort	extended pkm fixturing system for micro-positioning and vibration rejection in machining application
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7257427d93ab4907802716dcdd3a9363
work_keys_str_mv	AT francescoaggogeri extendedpkmfixturingsystemformicropositioningandvibrationrejectioninmachiningapplication AT nicolapellegrini extendedpkmfixturingsystemformicropositioningandvibrationrejectioninmachiningapplication AT francoluistagliani extendedpkmfixturingsystemformicropositioningandvibrationrejectioninmachiningapplication
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Extended PKM Fixturing System for Micro-Positioning and Vibration Rejection in Machining Application

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