Application of the conformal mapping for state analysis of track circuits

Abstract

Abstract In the article, we present the results of using conformal mapping for state analysis of track circuits in various mode of operation. The work shows that the state of a track circuit can be derived from its input resistance. The article shows nomograms of input resistances when the rail line characteristics change. Authors regards that the input resistance areas for the control and shunt modes of the track circuit are completely separable over the entire range of variation of the rail line parameters. Nomograms of input resistances can be used in systems for diagnosing and monitoring track circuits.