The wavelet decompositions as a method of power-generating diagnostic
Abstract
The wavelet decompositions as a method of power-generating diagnostic
Incoming article date: 10.12.2015The problem of equipment diagnosis for wear and tear is considered in the article. The reduction in expenditure for equipment service maintenance can be reached by early failure detection. For this purpose it is required an extension of diagnosis method. The purpose of the article is the analysis of using wavelet decomposition device for detection of malfunctions of the hydraulic and pneumatic equipment. Works of other authors on this subject are analyzed. By means of a mathematical package of the applied MATLAB program the three-dimensional scale gram of wavelet decomposition are constructed. It gives much attention to comparison of widely applied method of Fourier transformation and the low-studied wavelet decomposition method. Two main equations of wavelet decomposition used for the solution of performance targets are considered. Introduction of new transformation algorithm gives more exact and quality assessment of equipment performance.
Keywords: power-generating diagnostic, vibration-based diagnostics, vibration signal, wavelet decomposition, Fourier transformation