Details
Original language | English |
---|---|
Pages (from-to) | 5149-5166 |
Number of pages | 18 |
Journal | International Journal of Production Research |
Volume | 42 |
Issue number | 24 |
Publication status | Published - 15 Dec 2004 |
Abstract
To meet the requirements of higher speeds, greater accuracies and improved reliability, direct linear drives are increasingly employed in new machine tools. In this paper, the modelling, control and monitoring of a direct linear drive for end milling are studied. First, a direct linear drive and its advantage are addressed; then, a dynamical model of the direct drive for end milling is proposed. Second, the friction and damping characteristic of the guideways and its relation to axis velocity and temperature as well as the cogging force of the drive resulting from the interaction of the primary (active) and secondary (passive or stator) part are analysed in detail. Third, possibilities to improve the motion behaviour of the direct linear drive by compensation of disturbances, friction and cogging forces are discussed, and a self-adjusting compensation controller and a state-space controller are proposed. Finally, a practical case demonstrates that the high-frequency cutting force can be tracked by the linear motor current. Then a tool breakage monitoring method by sensing linear motor current with a smoothing non-linear energy operator is proposed and tested with the practical case.
ASJC Scopus subject areas
- Business, Management and Accounting(all)
- Strategy and Management
- Decision Sciences(all)
- Management Science and Operations Research
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: International Journal of Production Research, Vol. 42, No. 24, 15.12.2004, p. 5149-5166.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Analysis and control/monitoring of the direct linear drive in end milling
AU - Denkena, B.
AU - Tönshoff, H. K.
AU - Li, X.
AU - Imiela, J.
AU - Lapp, C.
N1 - Funding Information: The author acknowledges the support of the Alexander von Humboldt Foundation, Germany. The project was supported by the DFG.
PY - 2004/12/15
Y1 - 2004/12/15
N2 - To meet the requirements of higher speeds, greater accuracies and improved reliability, direct linear drives are increasingly employed in new machine tools. In this paper, the modelling, control and monitoring of a direct linear drive for end milling are studied. First, a direct linear drive and its advantage are addressed; then, a dynamical model of the direct drive for end milling is proposed. Second, the friction and damping characteristic of the guideways and its relation to axis velocity and temperature as well as the cogging force of the drive resulting from the interaction of the primary (active) and secondary (passive or stator) part are analysed in detail. Third, possibilities to improve the motion behaviour of the direct linear drive by compensation of disturbances, friction and cogging forces are discussed, and a self-adjusting compensation controller and a state-space controller are proposed. Finally, a practical case demonstrates that the high-frequency cutting force can be tracked by the linear motor current. Then a tool breakage monitoring method by sensing linear motor current with a smoothing non-linear energy operator is proposed and tested with the practical case.
AB - To meet the requirements of higher speeds, greater accuracies and improved reliability, direct linear drives are increasingly employed in new machine tools. In this paper, the modelling, control and monitoring of a direct linear drive for end milling are studied. First, a direct linear drive and its advantage are addressed; then, a dynamical model of the direct drive for end milling is proposed. Second, the friction and damping characteristic of the guideways and its relation to axis velocity and temperature as well as the cogging force of the drive resulting from the interaction of the primary (active) and secondary (passive or stator) part are analysed in detail. Third, possibilities to improve the motion behaviour of the direct linear drive by compensation of disturbances, friction and cogging forces are discussed, and a self-adjusting compensation controller and a state-space controller are proposed. Finally, a practical case demonstrates that the high-frequency cutting force can be tracked by the linear motor current. Then a tool breakage monitoring method by sensing linear motor current with a smoothing non-linear energy operator is proposed and tested with the practical case.
UR - http://www.scopus.com/inward/record.url?scp=10444255489&partnerID=8YFLogxK
U2 - 10.1080/00207540412331299611
DO - 10.1080/00207540412331299611
M3 - Article
AN - SCOPUS:10444255489
VL - 42
SP - 5149
EP - 5166
JO - International Journal of Production Research
JF - International Journal of Production Research
SN - 0020-7543
IS - 24
ER -