PQ測定のチャンネル数増加に向けたアンプ内蔵型スリップリング装置の原理試作

抄録

Instrumented wheelsets are widely used in the railway industry for the purpose of measurement of the wheel-rail interaction forces, which are crucial factors in a running safety assessment. Recently, the author proposed a new configuration of bridge circuit for measuring wheel-rail lateral force, which are categorized as “axially-asymmetric bridge circuit.” The merit of this type of bridge circuit is to reduce the measurement error associated to the lateral contact point shift. However, this type of bridge circuits require more signal channels than the conventional symmetric bridge circuit. In this paper, a new slip-ring device which has built-in amplifiers is prototyped as a signal transmission device of instrumented wheelsets to achieve increasing the number of transmission channels. The basic performances of the device are verified through roller-ring test.