- Tytuł:
- Accuracy in force estimation applied on a piezoelectric fine positioning system for machine tools
- Autorzy:
-
Uhlmann, Eckart
Polte, Mitchel
Triebel, Florian
Overbeck, Rasmus
Thom, Simon - Powiązania:
- https://bibliotekanauki.pl/articles/1428949.pdf
- Data publikacji:
- 2021
- Wydawca:
- Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
- Tematy:
-
force estimation
piezoelectric actuator
machine tool deflection
online compensation - Opis:
- In order to improve the accuracy of machine tools, the use of additional active modules meeting the requirements of the “Plug & Produce” approach is focused. In this context one approach is the installation of a high precision positioning table for online compensation of machine tool deflections. For the model-based determination of the deflection, the knowledge of the effecting process force is crucial. This article examines the use of displacement sensors for force estimation in a piezoelectric system. The method is implemented on a high precision positioning table applicable in milling machine tools. In order to compensate nonlinear effects of piezoelectric actuators, a hysteresis operator is implemented. Experimental investigations are carried out to quantify the influence of preload stiffness, preload force and workpiece weight. Finally, a resolution d ≤ 78 N could be achieved and further improvements to meet the requirements for online compensation of machine tool deflection are discussed.
- Źródło:
-
Journal of Machine Engineering; 2021, 21, 2; 24-34
1895-7595
2391-8071 - Pojawia się w:
- Journal of Machine Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł