The paper deals with a design method of multi-order diffractive intraocular lenses (IOL) that we have developed in order to correct chromatic aberration. It is shown that in order to prevent a color halo around the focused image the phasematching number is selected to attend at each point of the image three color components to get quality image. A computer simulation of multi-order diffractive lens (MODL) in a schematic model of the human eye was carried out. The calculated MODL focuses white light into a segment on an optical axis with high diffractive efficiency. More research needed to study an aberration analysis of lenses of this type.
A GPU-based method of multi-volume rendering is described. the analytic results are supported by simulations of volume rendering on a number of scenes with function-based surfaces. our method supports a large number of volumes, complex translucent functional objects as well as constructive solid geometry intersections of volumes and function-based surfaces.
Proposed in the paper are the new algorithms for vibration-based diagnostics of existing defects in hydraulic units. They are based on an artificial neural-like network, which implements spectral analysis of vibroacoustic signals using threedimensional amplitude-frequency-temporal spectra of these signals, such spectra being obtained using discreet wavelet transformation.
This article is devoted to the development of an automated system for the theoretical study of hydrodynamic processes occurring in pressure generators of hydraulic vibrating and vibro-impact machines. Intensification of various technological processes in industry and agriculture requires the use of advanced technologies – vibrating and vibroimpact technological equipment. Effective modes of operation hydraulic vibrating and vibro-impact machines are determined by special generators of pressure pulses – valve-pulsers. To study the operating modes of vibrating and vibro-impact machines at various technological parameters, an automated system of mathematical simulation of a hydroimpulse drive has been developed. The method of final volumes in the CFD-program was used to determine the main dependencies of the working parameters of pressure generators for vibrating and vibro-impact machines. The results of automated modeling allowed us to evaluate the efficiency of the developed designs of pressure pulse generators at various operating modes of hydraulic vibrating and vibro-impact technological equipment.
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