Vibration component acceleration estimation device and vibrational component acceleration estimation method for railway vehicle

A vibrational component acceleration estimation device for a railway vehicle for estimating the acceleration of a vibrational component acting on a vehicle body in a lateral direction when the railway vehicle having a vehicle body tilting device runs in a curve section, comprising:

• an acceleration detection means for detecting the acceleration acting on the vehicle body in a lateral direction;
• a theoretical excess centrifugal acceleration calculation means for acquiring track information at a running point of the railway vehicle, a running speed of the railway vehicle, and ON/OFF information of vehicle body tilting operation, and calculating a theoretical excess centrifugal acceleration αL acting on the vehicle body in a lateral direction based on the following Equation (1) or (2);
• and
• a vibration acceleration calculation means for deriving the acceleration of the vibrational component acting on the vehicle body based on the acceleration detected by the acceleration detection means and the theoretical excess centrifugal acceleration αL determined by the theoretical excess centrifugal acceleration calculation means,
• in the case where the vehicle body tilting operation is turned ON:
• αL=ηhd ON×(V2/R−g×C/G) (1)
• in the case where the vehicle body tilting operation is turned OFF:
• αL=ηOFF×(V2/R−g·C/G) (2)
• where in the above Equations (1) and (2), ηON and ηOFF 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.

A vibrational component acceleration estimation method for a railway vehicle for estimating the acceleration of a vibrational component acting on a vehicle body in a lateral direction when the railway vehicle having a vehicle body tilting device runs in a curve section, comprising:

• an acceleration detection step for detecting the acceleration acting on the vehicle body in a lateral direction;
• a theoretical excess centrifugal acceleration calculation step for acquiring track information at a running point of the railway vehicle, a running speed of the railway vehicle, and ON/OFF information of vehicle body tilting operation, and calculating a theoretical excess centrifugal acceleration αL acting on the vehicle body in a lateral direction based on the following Equation (1) or (2);
• and
• a vibration acceleration calculation step for deriving the acceleration of the vibrational component acting on the vehicle body based on the acceleration detected in the acceleration detection step and the theoretical excess centrifugal acceleration αL determined in the theoretical excess centrifugal acceleration calculation step,
• in the case where the vehicle body tilting operation is turned ON:
• αL=ηON×(V2/R−g×C/G) (1)
• in the case where the vehicle body tilting operation is turned OFF:
• αL=ηOFF×(V2/R−g×C/G) (2)
• where in the above Equations (1) and (2), ηON and ηOFF 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.