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Piezo Ceramic Actuators versus High Magnetostrictive Actuators in the Active control of Tool Vibration
Ansvarig organisation
1999 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat) Published
Abstract [en]

In the turning operation chatter or vibration is a frequent problem, which affects the result of the machining, and, in particular, the surface finish. Tool life is also influenced by vibration. Severe acoustic noise in the working environment frequently occurs as a result of dynamic motion between the cutting tool and the workpiece. These problems can be reduced by active control of machine-tool vibration. In the active control system for the control of tool vibration a tool holder construction with integrated high magnetostrictive actuators was used. However, high magnetostrictive actuators generally have a non-linear behavior and it is a well known fact that non-linear properties in the forward path in an active control system is likely to degrade the robustness of the control system. A new generation embedded active tool holder shanks based on piezo ceramic actuators has been developed. Based on spectrum estimates, both coherence spectrum and frequency response function estimates has been calculated for both the old tool holder construction and the new generation active tool holder shank. From the results it follows that the phase delay is smaller and the linearity of the new generation active tool holder shank are superior compared to the old technology. The physical features and properties of the new generation active tool holders are superior to the old tool holder.

Ort, förlag, år, upplaga, sidor
Berlin, 1999.
Nationell ämneskategori
Signalbehandling
Identifikatorer
URN: urn:nbn:se:bth-9931Lokalt ID: oai:bth.se:forskinfo6ABB7FB0BE1D2433C1256C6A0035589EOAI: oai:DiVA.org:bth-9931DiVA, id: diva2:837922
Konferens
FORUM ACUSTICUM
Tillgänglig från: 2012-09-18 Skapad: 2002-11-07 Senast uppdaterad: 2015-06-30Bibliografiskt granskad

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Håkansson, LarsClaesson, Ingvar

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