Active Control of Machine-Tool Vibration in a Lathe
|Document type:||Conference Papers|
|Author(s):||Ingvar Claesson, Lars Håkansson|
|Title:||Active Control of Machine-Tool Vibration in a Lathe|
|Conference name:||Fifth International Congress on Sound and Vibration|
|Organization:||Blekinge Institute of Technology|
|Department:||Dept. of Signal Processing (Institutionen för signalbehandling)
Dept. of Signal Processing S-372 25 Ronneby
+46 455 38 50 00
|Abstract:||In the turning operation the relative
dynamic motion between cutting tool and workpiece, or vibration is a frequent problem, which affects the result
of the machining, in particular the surface finish. The tool life is also influenced by the vibrations. When the working environment is considered, noise is frequently introduced by dynamic motion between the cutting tool and the workpiece.
By proper machine design, e.g. improved stiffness of the machine structure, the problem of relative dynamic motion between cutting tool and workpiece may be partially solved. However, by active control of machine-tool vibration, a further reduction of the dynamic motion between cutting tool and workpiece can be achieved.
It was found that adaptive feedback control based on the filtered-x LMS-algorithm enables a reduction of the
vibration with up to 40 dB at 1.5 kHz and simultaneously with approximately
40 dB at 3 kHz. A significant improvement of the workpiece surface was observed and a substantial improvement of the acoustic noise level was obtained with adaptive control.
|Subject:||Signal Processing\Active Noise and Vibration Control|