A review of dynamic characteristics of magnetically levitated vehicle systems

Cai, Yujie; Chen, Shoei‐Sheng

doi:10.2172/219431

Cited by 8 publications

(4 citation statements)

References 38 publications

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“…Earlier research investigated surface velocities of between 300 to 500 km/h while hyperloop targets even higher speeds. Argonne labs established a testing platform facility, as shown in the 1990s [41]- [43], but the testing was conducted only at much lower operating speeds. Recently, Hyperloop companies have also published testing reports.…”

Section: Importance Of Innovative Laboratory Demonstratorsmentioning

confidence: 99%

A Reality Check on Maglev Technology for the Hyperloop Transportation System: Status Update After a Decade of Development

Nøland,

Bird

2024

Preprint

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Ten years ago, the concept of the hyperloop vacuum train promised to revolutionize transportation by offering a fast, inexpensive, and eco-friendly alternative to traditional modes of travel. The key components of the hyperloop are a vacuum tube, magnetic levitation, and linear electric propulsion technology, which is envisaged to achieve surface velocities approaching the speed of sound. This paper presents the functionalities of an ideal hyperloop transportation system (HTS) with a low-cost track and a lightweight hyperloop capsule. We show how this ideal system is indeed difficult to achieve in reality. Despite the potential benefits, hyperloop technology still lacks experimental evidence at subsonic speeds to reach a higher level of technological readiness. Taking one step back, hyperloop has lessons to learn from the maglev research and experiments in the 1970s. In fact, there are many unresolved challenges associated with maglev technologies, even at moderate speeds, which need to be recognized before reaching the whole way into the subsonic speed domain. This paper will provide a status update after ten years of hyperloop research and development.

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Section: Importance Of Innovative Laboratory Demonstratorsmentioning

confidence: 99%

A Reality Check on Maglev Technology for the Hyperloop Transportation System: Status Update After a Decade of Development

Nøland,

Bird

2024

Preprint

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“…The air-gap must be maintained continually to keep the Maglev train suspended and it is typically between 7 mm to 10 mm. The levitation and guidance systems are either integrated or separated in the EMS based Maglev train [3], [23], [24].…”

Section: A Electromagnetic Suspension Systemmentioning

confidence: 99%

“…Maglev systems will offer the advantages of better ride quality, strong climbing ability, a small turning radius, low noise, cheap maintenance cost, potential energy savings, economic benefits, and as well as relief of traffic congestion. The adoption of magnetic levitation technology can resolve difficulties caused by wheel rail contact such as; adhesion, friction, and vibration [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Genetic Algorithm Tuned Super Twisting Sliding Mode Controller for Suspension of Maglev Train With Flexible Track

Teklu

Abdissa

2023

IEEE Access

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The suspension air-gap of Maglev train needs controller for it is inherently unstable and highly nonlinear. To maintain a high quality of ride, comfort and safety for the passengers the train suspension controller must maintain the suspension air-gap. During operation the suspension air-gap of a Maglev train is only in millimeters. This easily causes instability under excitation of nonlinear load and track tiny deformation. Additionally, a track with a low stiffness will experience larger bending displacement and result in high vibrations. A high stiffness track experience minor bending displacement, which will diminish the vibration and improve riding quality. Unfortunately, using high stiffness guideway track is expensive. Instead, by designing a good controller the low stiffness material can be used. In this paper genetic algorithm tuned super twisting sliding mode control is proposed for it offers a good controlling ability since it is insensitive to external disturbance, parameter variation and has a fast dynamic response. The proposed controllers are tested under different circumstances, i.e., Maglev train with rigid track and with flexible track under variable load and external random disturbance.INDEX TERMS Flexible track, genetic algorithm, Maglev train, sliding mode control, super twisting sliding mode control and suspension air-gap.

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“…Therefore, to optimize the vehicle and guideway, it would be desirable to include all the components in air gap simulations. In the 1970s, some researchers extensively studied the evaluation of dynamic characteristics, like ride quality, of magnetic trains according to guideway construction tolerances and deflections [1][2][3]. Most dynamics model used was a planar model.…”

Section: Introductionmentioning

confidence: 99%