Buriak S. Improvement of technology maintenance centralized turnouts with alternating current electric drive in operation

The thesis purpose is the improving the technology of diagnostic centralized point alternating current electric drives in operation by automating the determination of their parameters. The research object is the technology of the maintenance turnouts. The scientific problem was solved with the correct use of modern mathematics. Scientific novelty is as follows: at the first time theoretical ground of experimental researches of the electrical characteristics point electric drives with alternating current motor in operation during movement of point with electrical and mechanical defects was obtained; at the first time the scientific substantiation of developed an automated method of diagnosing turnout alternating current electric drives in operation based on the analysis point movement current function in the time and frequency domain was obtained; development of the complex mathematical model of the electromechanical processes in turnout alternating current electric drives during movement of point in working condition and under certain defects was further developed. The obtained results allow to simplify the search of the damages of the centralized point electric drives by automated determination of the diagnostic features under the proposed method, and can also be applied for development and introduction systems for improvement of the railway automatics maintenance technology for objects with centralized control and supply. The method of automated continuous diagnostics of turnout electric drives by which can be determined 16 basic faults was developed, prototype of automated hardware and software system for point electric drive parameters diagnostics in operation was created and used in real conditions. The results were used for DNURT scientific research and educational process. The work practical implementation is confirmed by relevant documents listed at the thesis annexes.