Bondarenko B. Improvement of the technical operation of electromagnetic relays railway automatics through the automation their diagnosis

The dissertation is devoted to the improvement of technical operation of the electromagnetic relays for railway automatics of the first class reliability by automating the processes of determining their parameters. In this work the mathematical models of an object of diagnostics, a relay contact system and a system of integrated methods of non-contact checking the electrical, temporal and mechanical characteristics of the relays through the electrical, electromagnetic, optical and acoustic measurement channels are developed. The following methods are developed in the dissertation: the automated determination of the relay armature coordinate by means of optical sensors and electromagnetic transducers; the automated method for checking the air gap through an acoustic measurement channel in combination with electrical, electromagnetic and optical characteristics of the relay operation. The method for determining the contact pressure is also developed based on the performance characteristics obtained. The given methods provide the ability to monitor the condition of a relay without removal of its protective casing. The algorithms of the simultaneous automated measurement of the relay parameters in several different non-contact ways for reducing the measurement error and improving the reliability of diagnostics are developed as well. The basic scientific results of the dissertation found the practical use in manufacturing and testing an experimental prototype of the measuring diagnostic complex for controlling the parameters of electromagnetic relays for railway automatics.