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.
|Number of pages||15|
|Journal||Vehicle System Dynamics|
|Issue number||SUPPL. 1|
|Early online date||5 Mar 2014|
|Publication status||Published - 30 May 2014|
|Event||23rd IAVSD Symposium on Dynamics of Vehicles on Roads and Tracks - Qingdao, China|
Duration: 19 Aug 2013 → 23 Aug 2013
Conference number: 23
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- Department of Engineering and Technology - Senior Lecturer
- School of Computing and Engineering
- Institute of Railway Research - Member
- Centre for Efficiency and Performance Engineering - Member