RELATIVE DISPLACEMENT DETECTING DEVICE FOR ESTIMATING A RADIUS OF CURVATURE FOR ACTIVE STEERING CONTROL OF RAILWAY VEHICLES

摘要

The present invention relates to a relative displacement measuring device for estimating the radius of curvature for active steering control of a railway vehicle. The relative displacement measuring device comprises: an inner container fixated to a body of a railway vehicle; an outer container into which the inner container is inserted and guided in a cylindrical structure and which is fixated to a bogie frame; a reflective plate mounted inside the outer container; and a sensor means which is arranged inside the inner container and measures relative displacement of the reflective plate. According to the present invention, a measurement sensor of the relative displacement measuring device for estimating the radius of curvature is installed inside the inner container and the outer container, thus both end portions of the inner and outer containers can be easily installed in the vehicle body and the bogie frame. In addition, the longitudinal relative displacement of the railway vehicle can be reliably measured even in sections such as a tunnel or the like, thereby reliably performing the estimation of the radius of curvature for active steering control of the railway vehicle.