Upgraded Kalman Filtering of Cutting Forces in Milling

Advanced piezoelectric dynamometers with a wide frequency bandwidth are required for cutting force measurement in high-speed milling and micromilling applications. In many applications, the signal bandwidth is limited by the dynamic response of the mechanical system, thus compensation techniques are...

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Main Authors: Giovanni Totis, Zoltan Dombovari, Marco Sortino
Format: Article
Language:English
Published: MDPI AG 2020-09-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/20/18/5397
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author Giovanni Totis
Zoltan Dombovari
Marco Sortino
author_facet Giovanni Totis
Zoltan Dombovari
Marco Sortino
author_sort Giovanni Totis
collection DOAJ
description Advanced piezoelectric dynamometers with a wide frequency bandwidth are required for cutting force measurement in high-speed milling and micromilling applications. In many applications, the signal bandwidth is limited by the dynamic response of the mechanical system, thus compensation techniques are necessary. The most effective compensation techniques for a full 3D force correction require an accurate and complex identification phase. Extended Kalman filtering is a better alternative for input force estimation in the presence of unknown dynamic disturbances. The maximum bandwidth that can be currently achievable by Kalman filtering is approximately 2 kHz, due to crosstalk disturbances and complex dynamometer’s dynamics. In this work, a novel upgraded Kalman filter based on a more general model of dynamometer dynamics is conceived, by also taking into account the influence of the force application point. By so doing, it was possible to extend the frequency bandwidth of the device up to more than 5 kHz along the main directions and up to more than 3 kHz along the transverse directions, outperforming state-of-the-art methods based on Kalman filtering.
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spelling doaj.art-d30d6fb582cd4bb8b907b71e0b1266ac2023-11-20T14:29:21ZengMDPI AGSensors1424-82202020-09-012018539710.3390/s20185397Upgraded Kalman Filtering of Cutting Forces in MillingGiovanni Totis0Zoltan Dombovari1Marco Sortino2Polytechnic Department of Engineering and Architecture, University of Udine, 33100 Udine, ItalyMTA-BME Lendület Machine Tool Vibration Research Group, Department of Applied Mechanics, Budapest University of Technology and Economics, H-1521 Budapest, HungaryPolytechnic Department of Engineering and Architecture, University of Udine, 33100 Udine, ItalyAdvanced piezoelectric dynamometers with a wide frequency bandwidth are required for cutting force measurement in high-speed milling and micromilling applications. In many applications, the signal bandwidth is limited by the dynamic response of the mechanical system, thus compensation techniques are necessary. The most effective compensation techniques for a full 3D force correction require an accurate and complex identification phase. Extended Kalman filtering is a better alternative for input force estimation in the presence of unknown dynamic disturbances. The maximum bandwidth that can be currently achievable by Kalman filtering is approximately 2 kHz, due to crosstalk disturbances and complex dynamometer’s dynamics. In this work, a novel upgraded Kalman filter based on a more general model of dynamometer dynamics is conceived, by also taking into account the influence of the force application point. By so doing, it was possible to extend the frequency bandwidth of the device up to more than 5 kHz along the main directions and up to more than 3 kHz along the transverse directions, outperforming state-of-the-art methods based on Kalman filtering.https://www.mdpi.com/1424-8220/20/18/5397millingcutting forcesdynamometerpiezoelectricdynamicscompensation
spellingShingle Giovanni Totis
Zoltan Dombovari
Marco Sortino
Upgraded Kalman Filtering of Cutting Forces in Milling
Sensors
milling
cutting forces
dynamometer
piezoelectric
dynamics
compensation
title Upgraded Kalman Filtering of Cutting Forces in Milling
title_full Upgraded Kalman Filtering of Cutting Forces in Milling
title_fullStr Upgraded Kalman Filtering of Cutting Forces in Milling
title_full_unstemmed Upgraded Kalman Filtering of Cutting Forces in Milling
title_short Upgraded Kalman Filtering of Cutting Forces in Milling
title_sort upgraded kalman filtering of cutting forces in milling
topic milling
cutting forces
dynamometer
piezoelectric
dynamics
compensation
url https://www.mdpi.com/1424-8220/20/18/5397
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