Independently Rotating Wheel Systems for Railway Vehicles-A State of the Art Review

Dukkipati, Rao V.; Swamy, S. Narayana; Osman, M. O. M.

doi:10.1080/00423119208969013

Cited by 56 publications

(35 citation statements)

References 10 publications

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“…As both wheels are not rigidly linked together, the creep forces do not cause wheels to move towards the centreline. From this point of view an open differential wheelset acts like a wheelset with IRW [11,29].…”

Section: Simulation Conditionsmentioning

confidence: 99%

Analysis of Dynamics of Ametro Vehiclemodel With Differentialwheelsets

Melnik¹,

Sowiński²

2017

Transport Problems

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The operating conditions of light rail vehicles (trams, metro vehicles) are predominantly different compared with those of passenger or freight trains. The increased number of low-radii curves has a negative effect on wheel-rail interaction. The general design of light rail vehicle running gear is inherited from passenger trains and adapted to different loads. However, conventional solutions of a running gear may not provide smooth low-radius curve negotiation in all circumstances. In addition, a two-point contact is likely to occur, which, in turn, leads to accelerated wear of not only the wheels' tread but also their flanges. One of the proposals to deal with problems associated with the wheel-rail interaction in tight curves is implementing an automotive solution: a differential gear. The aim of the study is to investigate the dynamic behavior of a metro vehicle model equipped with differentials at each wheelset. The differentials were tested in two main variants: open and with internal friction torque. Internal friction torque value was set, consecutively, up to 2000 Nm. The results have shown that on tight curves a differential may improve rail vehicle wheel-rail interaction.

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Section: Simulation Conditionsmentioning

confidence: 99%

Analysis of Dynamics of Ametro Vehiclemodel With Differentialwheelsets

Melnik¹,

Sowiński²

2017

Transport Problems

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“…In addition, the instability of different types is still observed from the independently-rotating wheelset and stabilization is also required to avoid potential oscillation in practice. There are many options to overcome the problems [1][2][3]. Passive solutions proposed include partial coupling between the two wheels and the use of magnetic steering.…”

Section: Introductionmentioning

confidence: 99%

“…The conventional solid-axle wheelset, in which two wheels are rigidly mounted on an axle, had been successfully used for railway vehicles for many years before its dynamic properties were fully understood [1,2]. It is now wellknown that the conventional wheelset starts to hunt at high speeds due to the rigid connection of the axle with profiled wheels and causes the instability and wear of both wheels and rails.…”

Section: Introductionmentioning

confidence: 99%

Integrated control strategies for railway vehicles with independently-driven wheel motors

Li¹,

Goodall

2008

Front. Mech. Eng. China

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This paper studies the development of integrated control strategies for railway vehicles with independently-driven wheel motors. First, a non-linear vehicle dynamic model and motor drive strategy are presented, which are followed by an investigation of the integrated control of stabilization, steering, and traction for the vehicle. Meanwhile a reformulated Kalman filter is developed and applied to estimate the required feedback by the control system. Finally, the effectiveness and practicality of the proposed integrated controller are examined and assessed by real-time simulation based on host-target computer technology provided by Matlab/Simulink.

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“…References to the present state-of-the-art can be found in refs. [1,2]. The main technical difficulty in the development of independent wheels systems is in substituting the steering effect of the conventional wheelset by means of some kind of mechanism or device.…”

Section: Introductionmentioning

confidence: 99%

Method for obtaining the modal properties of articulated trains equipped with independently rotating wheels

Baeza¹,

Carballeira

Roda

et al. 2006

Vehicle System Dynamics

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Independently rotating wheels in railway vehicles could represent an alternative to standard technology as a solution to dynamic problems such as hunting instability or steering forces in curves. Among the proposed design solutions, the train with independently rotating wheels and with the most practical applications is that developed by Talgo. The Talgo technology is based on the use of a passive steering technique of the wheelset through a mechanism. The absence of automatic control systems means that a careful selection of the mechanical parameters of the vehicle is required to improve its dynamic characteristics. Aspects such as dynamic stability or the effect of vibration on passenger comfort could be analysed by extracting the modal properties of the train from mathematical models.In this article, a methodology for determining the low-frequency modal properties of articulated trains equipped with independently rotating wheels and passive steering system (Talgo-type) is proposed. The singularity of this application based on the use of non-conventional wheelsets necessarily involves the development of a specific methodology.

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Independently Rotating Wheel Systems for Railway Vehicles-A State of the Art Review

Cited by 56 publications

References 10 publications

Analysis of Dynamics of Ametro Vehiclemodel With Differentialwheelsets

Analysis of Dynamics of Ametro Vehiclemodel With Differentialwheelsets

Integrated control strategies for railway vehicles with independently-driven wheel motors

Method for obtaining the modal properties of articulated trains equipped with independently rotating wheels

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