Independently Rotating Wheels with Induction Motors for High‐Speed Trains

Liang, Bo; Iwnicki, Simon

doi:10.1155/2011/968286

Cited by 11 publications

(7 citation statements)

References 6 publications

(5 reference statements)

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“…The investigated wheelset and bogie frame (see Fig. 1) on roller system can be defined via the following equations of motion, as a modification from [27] and [28] for two solid axle wheelsets and steering of leading wheelset as follows:…”

Section: Investigated Wheelset and Bogie Systemmentioning

confidence: 99%

Railway Wheelset Active Control and Stability via Higher Order Neural Units

Beneš

Bukovský²

2023

IEEE/ASME Trans. Mechatron.

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This article investigates an unconventional approach to solving the control of lateral displacement for railway bogie wheelsets using recurrent higher order neural units (HONUs). Although studies addressing control of independently rotating wheelsets have shown promising results, they are rarely applied by railway manufacturers. Research and developments in modern bogie design are trending toward active yaw control design as an extension to conventional wheelsets mechanics, particularly for higher speeds. We investigate a model-reference architecture for active control via setpoint tracking of lateral displacement. Then, a new HONU sliding mode architecture is derived to solve convergence for zero lateral displacements in higher running speeds which is a more profoundly complex issue in maintaining minimal hunting motion. Starting from the property of nonlinear polynomial architecture of HONUs with in-parameter linearity, we derive a time-variant state-space representation via nonlinear identical decomposition. Then, an input-to-state stability (ISS) approach is applied to prove the local asymptotic convergence of the applied algorithm in each state point and the boundedinput-bounded-state stability of the entire nonlinear adaptive control loop. Using ISS theory, we also prove the global asymptotic stability of the HONU sliding mode controller for the actively controlled wheelset system. The techniques are validated by simulations and a real roller rig system.

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Section: Investigated Wheelset and Bogie Systemmentioning

confidence: 99%

Railway Wheelset Active Control and Stability via Higher Order Neural Units

Beneš

Bukovský²

2023

IEEE/ASME Trans. Mechatron.

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“…and Goodal, R. [42,43] Liang, B., Liu, X.Y. and Iwnicki, S. [44,45], Konowrocki, R. and Kalinowski, D. [46,47], Farhat, N. and Ward, C.P. [48,49], Chudzikiewicz, A.…”

Section: A Current State Of the Problemmentioning

confidence: 99%

A Study of Improving Running Safety of a Railway Wagon with an Independently Rotating Wheel’s Flange

et al. 2021

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The main objective of this work is to study the possibilities of improving the running safety of a railway wagon with independently rotating wheels by changing their design symmetrically mounted on an axle. The article provides a discussion of the advantages and disadvantages of using the independently rotating wheels in a bogie of railway wagons. Their increasing tendency of derailment is described. The influence of a perspective constructive scheme (PKS) of railway wagon wheels in comparison with a traditional constructive scheme (TKS) on running safety due to the climbing of a wheel flange onto a rail is studied. This work introduces a conceptual proposition of a technical solution to railway wheel design as well as containing the results of both analytical calculations as well as the results of multibody simulations. A PKS wheel design for a railway wheel is designed that allows independent rotation of its tread surface and of a guiding surface (i.e., of a flange) to each other, which both are arranged symmetrically on a wheelset axle. It brings features of the distribution of friction forces generating in a flange contact when the wheel with a TKS and with PKS move on a rail. It is possible to conclude with the help of the obtained results that the use of wheels with the PKS is advisable for the reduction of the running resistance as well as for increasing the running safety of railway wagons.

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“…Most researchers and engineers considered that the hunting motion was eliminated on the IRW in previous research, but the hunting phenomenon on the IRW has already been observed in some simulations or practical experiments conducted by different research groups. Liang and Iwnicki [17] built an IRW simulation model in Simulink and an IRW experiment system with a test rig. They found that lateral oscillation would occur at high speeds without an active motor control.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling, Dynamic Characteristics, and Slight Self-Guidance Ability at High Speeds of Independently Rotating Wheelset for Railway Vehicles

Jia,

Yin,

Wang

2024

Applied Sciences

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For better small-radius curve negotiation performance, the independently rotating wheelset has the potential to be equipped in urban rail transit. As a crucial part of the running gear, its dynamic characteristics directly affect the railway vehicle’s stability and curve negotiation ability. This study follows a model–simulation–experiment method to delve into the dynamic process and steady convergent process of the independently rotating wheelset. An improved mathematical dynamic model of the independently rotating wheelset is established, considering the gravitational restoring forces of the wheelset and different creepages between the left and right wheels. In addition, the gyroscopic effects on the independently rotating wheelset with positive wheel tread conicity and at high speeds are introduced and analyzed. With variations in the longitudinal speed and yaw suspension coefficients, three kinds of motions, derailment, hunting, and offset running, occur on the independently rotating wheelset. We find that the gyroscopic effects contribute to the slight self-guidance ability of the independently rotating wheelset, causing a hunting motion at high speeds. Through sufficient simulations, the improved mathematical dynamic model is verified to be closer to the dynamic model built in the general multibody system simulation software SIMPACK 2018 than the classical mathematical dynamic model. Further, we perform experiments on a scaled independently rotating wheelset experiment system. The dynamic characteristics derived from theoretical analysis, especially the slight self-guidance ability at high speeds, are verified.

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Independently Rotating Wheels with Induction Motors for High‐Speed Trains

Cited by 11 publications

References 6 publications

Railway Wheelset Active Control and Stability via Higher Order Neural Units

Railway Wheelset Active Control and Stability via Higher Order Neural Units

A Study of Improving Running Safety of a Railway Wagon with an Independently Rotating Wheel’s Flange

Dynamic Modeling, Dynamic Characteristics, and Slight Self-Guidance Ability at High Speeds of Independently Rotating Wheelset for Railway Vehicles

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