TY  - JOUR
PY  - 2014//
TI  - Friction coefficient estimation using an unscented Kalman filter
JO  - Vehicle system dynamics
A1  - Zhao, Yunshi
A1  - Liang, Bo
A1  - Iwnicki, Simon
SP  - 220
EP  - 234
VL  - 52
IS  - Suppl 1
N2  - The friction coefficient between a railway wheel and rail surface is a crucial factor in maintaining high acceleration and braking performance of railway vehicles; therefore, monitoring this friction coefficient is important. Due to the difficulty in directly measuring the friction coefficient, the creep force or creepage, indirect methods using state observers are used more frequently. This paper presents an approach using an unscented kalman filter to estimate the creep force and creepage and the friction coefficient from traction motor behaviours. A scaled roller rig is designed and a series of experiments is carried out to evaluate the estimator performance.<p />
LA  - en
SN  - 0042-3114
UR  - http://dx.doi.org/10.1080/00423114.2014.891757
ID  - ref1
ER  -