Surveillance of wood milling process by means of Time - Frequency- Distributions of measured vibration

• Autorzy: Meltzer G. , Iwanow Y.
• Konferencja: 19th IMEKO TC-10 International Conference on Technical Diagnostics. Integration in Technical Diagnostics (22-24.09.1999 ; Wrocław)
• Języki publikacji: EN

Abstrakty

EN

This paper deals with the Time - Frequency - Distribution (TFD) of transient instationary vibrations, which appears at the milling of wood or wood-like materials (chipboards) by means of wood processing tools. Correlating with the wear of cutting edges features can be extracted out of the measured acceleration signals by means of time-frequency analysis. We developed an algorithm for recognition of the actual state of wear. Each of the cutting edges of a multiblade milling head can be attached to a certain class, which describes the degree of wear. All classes are defined by the accompanying vector of characteristic features in the multidimensional feature-space. For pattern recognition we use a databased classificator. This approach is futhermore demonstrated by an example.

Słowa kluczowe

EN

monitoring; wood milling; blunting of cutting edges; vibration measurement; data processing; time-frequency-distribution; wavelets; multi-variat diagnosis; pattern recognition

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Górnictwa Politechniki Wrocławskiej. Konferencje
• Rocznik: 1999
• Tom: Vol. 86, nr 24
• Strony: 184--189
• Opis fizyczny: Bibliogr. 8 poz., rys.5

Twórcy

autor

Meltzer G.

autor

Iwanow Y.

• Dresden University of Technology, Department of Energy Machines and Machine and Machine Laboratory, D-01062 Dresden