抄録
To enhance the safety and reliability of railway transportation, it is one of the most important tasks to check the track condition frequently and accurately. This paper describes the track condition monitoring technique using car-body motions at speed changing section. In an inverse problem to estimate track geometry from car-body acceleration and pitching rate measured by in-service vehicle, time-varying Karman filter were applied. Study result confirmed that proposed solutions can be used to estimate track geometry in level with desired precision, even if the vehicle speed is changed.
