Evaluation of active structural vibration control strategies in milling process
Open access
Date
2012Type
- Working Paper
ETH Bibliography
yes
Altmetrics
Abstract
The ability of different active control strategies to mitigate the apparition of structural oscillations, like forced and self-excited vibrations, of the tool center point during milling process are evaluated and compared using specific measures. These measures quantify the efficiency for vibration suppression by some strategies and the corresponding costs involved. The objective is to be able to identify and dimension the most appropriate control strategies likely to improve the milling process dynamics given an acceptable amount of effort provided by the active system. First, the definitions of the proposed measures are formulated. A performance measure is defined using the transfer function of the active structure at the tool center point. The effort provided by the actuating system is quantified using the transfer function between the forces coming from the process and those delivered by the actuators. Both measures are then applied to a specific case study in order to evaluate their relevancy and verify their interpretation with regard to the milling process. The obtained results underline the fact that the chosen measures are able to quantify the improvements of a milling process induced by the implementation of a specific active vibration control strategy and its corresponding effort requirements. Show more
Permanent link
https://doi.org/10.3929/ethz-a-007570029Publication status
publishedPublisher
Institute of Machine Tools and Manufacturing, ETH, Zurich, SwitzerlandSubject
Milling; PROPORTIONAL-DIFFERENTIAL REGLER (AUTOMATISCHE REGELUNG); MILLING MACHINES (MACHINING); Vibration; MACHINERY VIBRATIONS (MECHANICAL ENGINEERING); Mechatronics; MASCHINENSCHWINGUNGEN, DÄMPFUNG (MASCHINENBAU); FRÄSMASCHINEN (SPANENDE UMFORMUNG); PROPORTIONAL DERIVATIVE CONTROLLERS (AUTOMATIC CONTROL); ControlOrganisational unit
03641 - Wegener, Konrad (emeritus) / Wegener, Konrad (emeritus)
02623 - Inst. f. Werkzeugmaschinen und Fertigung / Inst. Machine Tools and Manufacturing
More
Show all metadata
ETH Bibliography
yes
Altmetrics