Honcharuk I. Methods of diagnostics and increase of control efficiency of technical condition of marine railways

The thesis focuses on solving a relevant scientific and practical problem, which consists in the development of methods and diagnostic tools and improving the efficiency of monitoring the technical condition of transport equipment, in particular elements and units of marine railways, through the introduction of an automated system for diagnostics and monitoring of technical condition, which provides an increase in the reliability of diagnosis, reducing the time and cost of diagnostics. The analysis showed that the existing methods for determining the main parameters of the technical condition of elements and units of slips, which are the basis for reliable diagnostics of the technical condition, need to be improved. A method has been developed for monitoring the integrity of the main elements of marine railways based on the analysis of the temperature and natural vibration frequency of the main elements, which, in contrast to the existing methods, gives an error in measuring the signal frequency of less than 0.05%, which makes it possible to determine defects at early stages of their development. The method of vibration monitoring of the technical condition of traction winches has been improved by using the methods of oversampling and decimation with a fractional coefficient to increase the accuracy of the vibration signal harmonic analysis, in contrast to the existing methods, it has an error in determining the vibration velocity of less than 0.5%, which allows more reliable determination of the physical wear of bearings. The method of diagnostic monitoring of the technical condition of electrically driven pumps has been improved by using digital filtering with subsequent interpolation of the vibration signal, which increases the accuracy and reliability of monitoring the vibration fundamental harmonic, allows for a qualitative assessment of the radial and angular displacement of the axes of pumps and power units of marine railways. Methods for determining the parameters of the technical condition of elements and units of slips are presented and introduced into the hardware and software of the Distributed Measurement System, which allows solving the relevant scientific and practical problem of developing and implementing methods and means for diagnosing the technical condition of elements and units of marine railways.