A novel estimator for adhesion force of railway vehicles braking systems and reference speed calculation

Liu, Jianfeng; Peng, Qing; Huang, Zhiwu; Li, Heng; Wang, Dongyang; Chen, Yuanjun; LinZhou, Fu

doi:10.1109/ccdc.2017.7978565

Cited by 6 publications

(1 citation statement)

References 12 publications

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“…Several approaches have been proposed using Kalman Filters to avoid measurement noise and the computation of derivatives used in [16]. However, these methods rely on the mathematical model of the mechanical drive train and require accurate parameter estimates [17]- [19]. The authors in [20] proposed an adaptive sliding mode control to stabilize wheel slip and improve traction performance but this method requires accurate measurement of the adhesion force, which is not easy to achieve in practice.…”

Section: Introductionmentioning

confidence: 99%

Torsional Vibration Suppression in Railway Traction Drives

et al. 2022

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Torsional vibrations phenomena are self-excited vibrations that occur in the wheelset of railway powertrains due to the counter-phase oscillation of both wheels. Long-lasting events of this type may lead to the catastrophic failures. Therefore, torsional vibration suppression and mitigation methods have drawn significant attention from the railway industry in the recent few years. Conventional vibration suppression methods reduce motor torque once the oscillation is detected. However, this can result in trip delays. Design of methods which do not compromise the traction capability is challenging. This paper proposes a novel torsional vibration suppression method using a Proportional-Resonant (PR) controller. The proposed method is insensitive to mechanical drive-train parameter variation neither requires adding new sensors to the wheelset. The method requires previous knowledge of the natural frequency of the wheelset torsional mode but this significantly reduces the implementation complexity suffered by other anti-vibration methods. Furthermore, the method will be shown to provide reduced sensitivity to slip velocities and wheelrail conditions.INDEX TERMS Railway traction drives, torsional vibrations, slip-stick phenomenon, slip control, fieldoriented control, proportional-resonant controller.

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