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In order to improve the performance of linear rolling guide on different machining condition, a guide performance degradation model based on dynamic fuzzy neural network (DFNN) was proposed to predict guide life after considering a variety of factors to guide's motion precision and wear status in this paper. The vibration signals from linear rolling guide were processed by time domain analysis and...
In this paper, the construction and properties of interval multi-wavelets with compact supports γ, multiplicity r and arbitrary integer dilation factor a are introduced, First, We obtain the parametric expressions of interval multi-wavelets. Then, we deduce the decomposition and reconstruction formulas of interval multi-wavelets. Finally we give an example to explain our theory.
The life change of the screw in High-end CNC machine tool in the process has some features such as non-linear, dynamic and uncertainty. A screw online life prediction system was designed to monitor the performance of lead screw by vibration sensors and temperature sensors which installed at different locations of Lead Screw Pair and reflected the trend of changes of different processing conditions,...
This paper studies bivariate wavelet tight frames with antidiagonal dilation matrix. The wavelet tight frames is formed by n functions in V1.First, the paper presents sufficient conditions of bivariate wavelet tight frames, and gives explicit constructing formula of bivariate wavelet tight frames. Second, derives the decomposition and reconstruction algorithm of bivariate wavelet tight frames. Finally,...
The basic theory and applications of near-field acoustic holographic (NAH) technique were introduced in this paper. The mechanism of acoustic emissions of water stress in plant was studied and a measurement analysis method was suggested. The acoustic emission signal in the plant was regarded as point sound source, and the cylindrical surface-spherical surface non-conformal acoustic holography transform...
A technique for deriving a new series of symmetric biorthogonal wavelets from a given symmetric regular filter is presented. The main idea is to find a symmetric complementary regular filter of the given filter which has the least square amplitude deviation from the ideal half band filter. Thus from a given regular symmetric filter, or from a known symmetric biorthogonal wavelet, a new series of symmetric...
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