SYSTEM AND METHOD FOR ESTIMATING ACCELERATION OF VIBRATION COMPONENT IN RAILCAR

A device for estimating the acceleration of a vibrational component acting on a vehicle body in a lateral direction when a railway vehicle having a vehicle body tilting device runs in a curve section includes a sensor (9) for detecting the acceleration acting on the vehicle body (1) in a lateral direction, a calculation unit (11) for acquiring track information at a running point, a running speed, and ON/OFF information of vehicle body tilting operation, and calculating a theoretical excess centrifugal acceleration ±L acting on the vehicle body (1) by the following Equations, and a calculation unit (12) for deriving the acceleration of the vibrational component acting on the vehicle body (1) based on the acceleration detected by the sensor (9) and the acceleration ±L determined by the calculation unit (11). In the case where the vehicle body tilting operation is turned ON: ±L = · ON × (V 2 /R - g x C/G) ... (1), and in the case where the vehicle body tilting operation is turned OFF: ±L = · OFF × (V 2 /R - g × C/G) ... (2). In the above Equations (1) and (2), · ON and · OFF denote correction coefficients, V denotes a running speed, R denotes a curvature radius of the track, g denotes gravitational acceleration, C denotes a cant amount of the track, and G denotes a track gauge. Thereby, a vibration generated in the vehicle body in a lateral direction is suppressed, so that the acceleration of the vibrational component can be estimated with a simple system configuration.