Low adhesion estimation
Low adhesion estimation
- Author(s): G. Charles and R. Goodall
- DOI: 10.1049/ic:20060051
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- Author(s): G. Charles and R. Goodall Source: IET International Conference on Railway Condition Monitoring, 2006 p. 96 – 101
- Conference: IET International Conference on Railway Condition Monitoring
- DOI: 10.1049/ic:20060051
- ISBN: 0 86341 732 9
- Location: Birmingham, UK
- Conference date: 29-30 Nov. 2006
- Format: PDF
Low adhesion in wheel-rail contact causes huge problems for scheduling and safety of railway networks. Braking and guidance forces have the same force generation mechanism, via the creep forces at the wheel-rail contact. This paper demonstrates the application of a Kalman filter to estimate the adhesion condition on the rails. The key aspect of this approach is that estimation is carried out on-line, during normal running, i.e. before the brakes have been applied. This will give a full network-wide picture of low adhesion conditions. The results show that the different adhesion levels cause different responses in the railway vehicle, and that a Kalman filter can estimate wheelset forces well, to give an indication of the adhesion level. The work is successfully applied to a Simulink half vehicle model.
Inspec keywords: rails; adhesion; mechanical contact; wheels; braking; railway safety; Kalman filters
Subjects: Other specific mechanical properties (mechanical engineering); Railway industry; Health and safety aspects; Mechanical components; Tribology (mechanical engineering)
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