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Contactless excitation and response system for analysis of high precision rotor dynamic properties
KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Maskin- och processteknologi.ORCID-id: 0000-0001-9185-4607
KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Maskin- och processteknologi.ORCID-id: 0000-0003-2511-7267
KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Maskin- och processteknologi.ORCID-id: 0000-0003-0155-127X
2013 (Engelska)Ingår i: Laser Metrology and Machine Performance X: LAMDAMAP 2013 / [ed] Prof. Liam Blunt & Dr. Wolfgang Knapp, Bedfordshire, UK: euspen , 2013, s. 150-156Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The spindle system is a critical part of a machine tool structure and its dynamic properties are important for the performance of the whole machining system. Currently the only way to extract the dynamic properties of a given structure is via experimental modal analysis. This approach, however, can only be employed on idle systems and is performed with the assumption that the dynamics of a system are independent of rotational speed. The latter assumption cannot be applied to spindle systems. This paper introduces a novel testing system for analysing machine tool spindles dynamic properties, consisting of real-time recursive estimation of modal and operational dynamic parameters, employed alongside a contactless excitation and response system. The presented approach allows analysing the spindle system condition and dynamic properties not only at discrete rotational speed intervals but also during continuous sweep of rotational speed.

Ort, förlag, år, upplaga, sidor
Bedfordshire, UK: euspen , 2013. s. 150-156
Nationell ämneskategori
Produktionsteknik, arbetsvetenskap och ergonomi
Forskningsämne
SRA - Produktion
Identifikatorer
URN: urn:nbn:se:kth:diva-120465Scopus ID: 2-s2.0-84908266209ISBN: 978-0-9566790-1-7 (tryckt)OAI: oai:DiVA.org:kth-120465DiVA, id: diva2:615097
Konferens
Laser Metrology, Machine tool, CMM and Robotic Performance, Lamdamap 10th International Conference and Exhibition; Kavli Royal Society International Centre, Buckinghamshire, UK, March 20-21, 2013
Projekt
FFI COMPIT – Capability of Machining Systems and Performance Improvement Technologies
Forskningsfinansiär
XPRES - Initiative for excellence in production researchVinnova
Anmärkning

QC 20130823

Tillgänglig från: 2013-04-08 Skapad: 2013-04-08 Senast uppdaterad: 2022-06-24Bibliografiskt granskad
Ingår i avhandling
1. Estimation of Machining System Dynamic Properties - Measurement and Modelling
Öppna denna publikation i ny flik eller fönster >>Estimation of Machining System Dynamic Properties - Measurement and Modelling
2017 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Dynamic characteristics of machining systems are analysed for improved understanding of both structural and process properties. The thesis stresses the use of testing methods under operational like conditions as these are more representative of closed loop systems, such as machining systems, as compared to conventional testing methods.

The test instrument proposed is a contactless excitation and response system, developed for testing of machine tool spindles under load and with rotating spindle. The instrument uses electromagnetic excitation and displacement sensors for analysis of rotating milling tools subject to load. A graphical tool for displaying and analysing rotor displacement was developed in conjunction with this.

A modelling procedure for both off-line and on-line estimation of dynamic properties of mechanical structure and process information is presented. The proposed auto-regressive moving average models enable calculation of operational dynamic parameters and they can be estimated in a recursive manner, thus enabling real-time monitoring. The discrimination between stable and unstable processes, both in turning and milling, was performed by analysing the damping obtained from the operational dynamic parameters.

Ort, förlag, år, upplaga, sidor
Stockholm: Kungliga Tekniska högskolan, 2017. s. 57
Serie
TRITA-IIP, ISSN 1650-1888 ; 17-02
Nyckelord
Machining system, Operational dynamic parameters, Displacement map, Contactless excitation and response system
Nationell ämneskategori
Produktionsteknik, arbetsvetenskap och ergonomi
Forskningsämne
SRA - Produktion; Industriell produktion
Identifikatorer
urn:nbn:se:kth:diva-204579 (URN)978-91-7729-323-1 (ISBN)
Disputation
2017-04-28, F3, Lindstedtsvägen 26, Stockholm, 10:00 (Engelska)
Opponent
Handledare
Forskningsfinansiär
VINNOVA
Anmärkning

QC 20170330

Tillgänglig från: 2017-03-30 Skapad: 2017-03-28 Senast uppdaterad: 2023-02-15Bibliografiskt granskad

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Archenti, AndreasDaghini, LorenzoÖsterlind, Tomas
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Maskin- och processteknologi
Produktionsteknik, arbetsvetenskap och ergonomi

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