Self-steering ability of the proposed new concept of independently rotating wheels using inverse tread conicity

Suda, Yoshihiro; Wang, Wenjun; Nishina, Minoru; Lin, Shihpin; Michitsuji, Yohei

doi:10.1080/00423114.2012.672749

Cited by 17 publications

(11 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The lateral and yaw dynamics of an IRW with inverse tread conicity are coupled by self-guidance moment derived from the lateral geometric force. 7 The limitation of this study is that no dynamic effect was considered in the profile design process. In future work, how the proposed profile design method influences the dynamic characteristic of an IRW with inverse tread conicity should be studied.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Design of the wheel profile of an independently rotating wheel with inverse tread conicity by considering the trajectory of the center of gravity

Wang

2014

Proceedings of the Institution of Mechanical Engineers, Part F:

Self Cite

View full text Add to dashboard Cite

The self-alignment of independently rotating wheels (IRWs) with inverse tread conicity cannot be realized simply by using a nonlinear concave wheel profile. A novel wheel profile design method is proposed to solve this problem that is based on the static guidance characteristic of a single isolated wheelset. The procedure is based on a desired lateral geometric force function with respect to the lateral displacement of IRWs with inverse tread conicity. The method focuses on the trajectory of the center of gravity under the wheel/rail contact constraint. A numerical process description and design example are provided and the resulting design is checked using forward contact analysis and the multi-body dynamics analysis software SIMPACK. A lateral restoring force that is proportional to the lateral displacement can be obtained using the proposed design method for the wheel profile.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Suda et al. 7 used an inverse tread conicity to create a restoring moment in the yaw direction. For a wheel with inverse tread conicity, the rolling radius reduces with the lateral displacement in the direction away from the center of the track.…”

Section: Introductionmentioning

confidence: 99%

Design of the wheel profile of an independently rotating wheel with inverse tread conicity by considering the trajectory of the center of gravity

Wang

2014

Proceedings of the Institution of Mechanical Engineers, Part F:

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, by changing the voltages supplying induction motors based on the difference in rotational speeds of individual wheels, i.e., the left wheel and the right wheel, it is possible to significantly reduce the unfavorable phenomenon of wheel set snaking. The currently conducted research concerns mainly the dynamics of the movement of a railway bogie, considering the side unevenness of the track or the properties resulting from the wheel profile [18][19][20], but, unfortunately, without the electric drive system. The induction motor control strategy plays a key role in ensuring the stable movement of the wheelset in special conditions [21], which include the movement along a transition curve connecting a straight track with a section of a curved track, or motion along a straight track, but with significant transverse track irregularities.…”

Section: Introductionmentioning

confidence: 99%

Electric Drive Solution for Low-Floor City Transport Trams

et al. 2022

View full text Add to dashboard Cite

The urban transport system based on trams as the basic means of transport is one of the oldest systems of human transport in urban agglomerations. A tram is a more efficient, cheaper-to-operate, and greener means of transport compared to a bus. Striving to enable the use of this means of transport by elderly and disabled people, constructors and manufacturers of tram vehicles began to consider the requirements of the ordering parties—organizers of municipal public transport—in their solutions. The basic condition for disabled and elderly people to use tram transport is the possibility of safe and efficient entry and exit from the vehicle at tram stops. The fulfillment of this condition is possible only in the case of tram vehicles with a low 100% floor, and this, in turn, requires the replacement of trolleys with traditional wheelsets, that is, trolleys with independently rotating wheels, in the construction of the running gear. A wheelset with independently rotating wheels (IRW) does not have self-centering properties, and, thus, problems may arise with excessive wear of wheel and rail profiles and with continuous contact of the wheel flange with the rail, which may, consequently, lead to derailment. Driving a vehicle on the track in this case is governed by different laws. To prevent such phenomena, it is required to use the wheel drive control system, which allows for the stabilization of the vehicle movement on the track. Both the introduction of independently rotating wheels in the construction of the bogie and the drive connected to the wheel control system requires research and analysis to confirm the correctness of the assumptions made. The innovative solution of the control system in the case of a tram vehicle was patented and then the patent was implemented to produce a low-floor tram with 100% low floor by a Polish tram manufacturer. This article presents the results of the work carried out on the adoption of the concept of a running gear and drive solution for a low-floor tram vehicle with independently rotating wheels and the results of simulation analysis of the drive control of such a system, using mathematical models of the mechanical system (running gear) and the electrical system (motor drive control system).

show abstract

“…The University of Tokyo has the Chiba Experiment Station, IIS, with a 25 m length scaled track (1/10) formed by the following segments: a straight section, transition curve, curved track ( R = 3.3 m), transition curve and a straight one. In this track, whose description can be found in 21 – 23 , the transition curves are sinusoidal. Also, in 24 , 25 it is explained the construction of a testbed for the development and testing of active steering systems of railway vehicles, and it includes a 1/5 scaled track model with no cant angle and two straight tracks (6.41 m length each one) connecting a curved track with R = 20 m and 14.30 m length.…”

Section: Introductionmentioning

confidence: 99%

Design and manufacture of a scaled railway track with mechanically variable geometry

Chamorro

Aceituno

Urda

et al. 2022

Sci Rep

View full text Add to dashboard Cite

The objective of this article is to present the design and manufacture of a scaled railroad track to be used as a laboratory track for the study of different railway applications. It could be a guideline for future laboratory railroad tracks. The ideal concept was based on possible future studies and, according to them, design requirements have been specified. The main characteristic of the track is that its geometry can be mechanically modified and irregularities can be introduced under controlled conditions in any kind of track sections: straight, curved and transition ones. Finally, the current installed track is shown and the performed quality controls are described.

show abstract

Self-steering ability of the proposed new concept of independently rotating wheels using inverse tread conicity

Cited by 17 publications

References 6 publications

Design of the wheel profile of an independently rotating wheel with inverse tread conicity by considering the trajectory of the center of gravity

Design of the wheel profile of an independently rotating wheel with inverse tread conicity by considering the trajectory of the center of gravity

Electric Drive Solution for Low-Floor City Transport Trams

Design and manufacture of a scaled railway track with mechanically variable geometry

Contact Info

Product

Resources

About