Romantsev I. Improvement of maintenance technology of tonal-frequency railway circuits by automation of control of their parameters

The research object is process of maintenance of voice-frequency railway circuits and control of their parameters. The purpose of work is an improvement of technical maintenance of voice-frequency railway circuits and diminishing of operating costs by automation of control of their parameters. The results of dissertation are got through the methods of mathematical design, numerical methods, transformation of Fourier, statistical analysis, design with the use of fuzzy logic and artificial neuron networks. The model of diagnosticating of the operations modes of voice-frequency railway circuits, which the electromagnetic, weather-climatic and other factors affect, is developed, taking into account the technical state of railway circuits, that allowed to define probabilities of transitions between the states of the system and make the formal algorithm of search of disrepairs of voice-frequency railway circuit in the process of his exploitation. The closenesses of distributing of voltages and currents are certain on the relay and feed-in end of voice-frequency railway circuits in the normal and shunt modes in the process of exploitation, that allowed to set probabilistic descriptions of implementation of the modes of railway circuit and to automatize control of the technical state of railway circuits with prognostication possibility of their border states. Improved mathematical model of voice-frequency railway circuit of the normal and shunt modes at approaching and passing of railway truck on a railway circuit. It differs from existing an account electric processes at the simultaneous flowing in the system of signal and code currents, and also takes into account the change of length of area of the additional shunt zone of railway line. It allowed to define the primary parameters of cable and railway busses, and also to control the current of the locomotive signaling in the process of exploitation of voice-frequency railway circuit. Drawing on the transferred results will allow to perfect technology of maintenance of voice-frequency railway circuits by creation of software and hardware-programmatic complex for realization of the automated control of parameters of voice-frequency railway circuits of the station and driving