TY  - JOUR
PY  - 2014//
TI  - Track geometry estimation from car-body vibration
JO  - Vehicle system dynamics
A1  - Tsunashima, Hitoshi
A1  - Naganuma, Yasukuni
A1  - Kobayashi, Takahito
SP  - 207
EP  - 219
VL  - 52
IS  - Suppl 1
N2  - Track maintenance works based on track geometry recordings are essential to enhance the safety and comfort of railway transportation. The track condition monitoring system is mainly used for the choice of area needing track tamping works for the purpose of the good riding comfort. An advantage of car-body acceleration measurement devices is their simple structures, which make it easier to carry out maintenance. However, the car-body acceleration waveform is considerably different from track geometry. This paper demonstrates the possibility to estimate the track geometry of Shinkansen tracks using car-body motions only. In an inverse problem to estimate track irregularity from car-body motions, a Kalman Filter (KF) was applied to solve the problem. Estimation results showed that track irregularity estimation in vertical direction is possible with acceptable accuracy for real use.<p />
LA  - en
SN  - 0042-3114
UR  - http://dx.doi.org/10.1080/00423114.2014.889836
ID  - ref1
ER  -