A Control Method for Hybrid Tilting Systems using Tilting Beams and Air Spring Inclination

Kamoshita, Shogo; Sasaki, Katsuhiko; Kakinuma, Hirohiko; Satō, Iwao; Sato, Yorimitsu; Nakagaki, Satoko

doi:10.2219/rtriqr.48.1

Cited by 4 publications

(5 citation statements)

References 4 publications

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“…Tilting trains, which have tilting mechanism of carbody to compensate for the shortage of cant when speed-up on sharp curves, are introduced for such purpose; in early times, natural pendulum type mechanisms using centrifugal force itself for tilting action were applied to commercial trains in Japan. Although the natural pendulum type of tilting trains contributed to increase speed in curved sections, it was found that they had matters to induce some passengers' comfort in curved section [36,37] and high-performance actuator [38,39] with good response to the tilting command are both important in improving performance and ride quality of tilting trains.motion sickness. This was considered caused by the delay of tilting motion at the entry and exit of a curve due to mechanical non-ideality such as friction.…”

Section: Application Of Control Techniquesmentioning

confidence: 99%

Research Topics on Railway Vehicle Dynamics

TOMIOKA

2018

EPI-IJE

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Engineering research subjects relating railway vehicle dynamics are described as a literature survey in this paper. Research works concerning to the motion of wheelset; pantograph-catenary interaction; aerodynamic relating problems on the vehicle; and application of control techniques are introduced firstly as the most distinctive subjects of railway vehicle dynamics. The topics on safety assessment and ride comfort evaluation are also dealt with since those are important research area in railway dynamics as public transportation system. The subject concerning to carbody elastic vibration, which is important relating to ride comfort, is also described. The effect of passengers on the elastic vibration of carbody has been introduced as the interesting (and something surprising) topic. The focuses in the literature survey are particularly on the research works from Japan, in this paper.

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Section: Application Of Control Techniquesmentioning

confidence: 99%

Research Topics on Railway Vehicle Dynamics

TOMIOKA

2018

EPI-IJE

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“…Carbody tilt by active airspring inflation/deflation was experimentally investigated since the late 1990s in Japan and then introduced in revenue service in the newer Shinkansen series [1]. The same active control implementation was also used in conjunction with a more traditional tilting system with hydraulic actuation, to achieve higher levels of compensation than those made possible by conventional tilting systems [12].…”

Section: State Of the Artmentioning

confidence: 99%

Active Control of Airspring Secondary Suspension to Improve Ride Quality and Safety against Crosswinds

Alfi

Bruni

Diana

et al. 2010

Proceedings of the Institution of Mechanical Engineers, Part F:

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Mechatronic technologies are increasingly adopted on railway vehicles, with particular reference to active secondary suspensions, as a means to improve vehicle performance in terms of ride safety and quality. This article presents the results of a theoretical and experimental research aimed at introducing active control capabilities in the pneumatic secondary suspension of a high-speed railway vehicle. The active airspring suspension is used, together with an active lateral suspension, to reduce passengers’ exposure to lateral acceleration in curves and to improve ride safety with respect to vehicle overturning in the presence of extreme crosswind. In this article, the active airspring concept is developed and suitable open- and closed-loop control strategies are proposed. Then, the results of an experimental characterization of the active suspension are reported, and based on these results a mathematical model of the vehicle with active suspension is defined. Finally, the active suspension performance is demonstrated by means of numerical experiments, showing the potential to bring substantial benefits in terms of both higher service speed for the same cant deficiency sensed by the passengers and increased ride safety.

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“…As far as the improvement of ride comfort is concerned, in addition to vibration suppression measures, such as active suspension and semi-active suspension [1], vibrations isolation measures in the vibration transfer paths have been implemented. Vibration isolation measures that have been investigated include vibration insulation using air springs [2] as well as measures focused on traction devices and yaw dampers, which connect members in the longitudinal direction of the vehicle. To date, measures to modify the spring characteristics of rubber bushes in a single-link type traction device [3,4] and the damping characteristics of a yaw damper [5] have been proposed.…”

Section: Introductionmentioning

confidence: 99%

“…In the previous stage of development [1,2], the purpose was to demonstrate the possibility of driving a railway vehicle using traction equipment such as a FC unit, a Bat unit and power converters. During this first stage therefore, the traction equipment was installed in space usually occupied by passengers because of the size of the equipment, and the acceleration performance was limited to that of DMU (approximately 0.4 m/s 2 ).…”

Section: Introductionmentioning

confidence: 99%

<b>Development of Longitudinal Excitation Suppression Devices for Reducing Car-body Elastic Vibrations in Bullet Trains</b>

AIDA,

TAKIGAMI,

AKIYAMA

et al. 2023

QR of RTRI

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This study proposes a method to reduce car body elastic vibrations in bullet trains caused by longitudinal excitation via traction devices and yaw dampers. We devised two vibration reduction devices-"displacement-dependent rubber bushes" and "mesh springs" to suppress the longitudinal excitation force. We conducted excitation tests using a Shinkansen (bullet train) type test vehicle in a rolling stock testing plant to examine the running stability and car body vibrations suppression performance when mounting the developed devices. Subsequently, we confirmed that these devices meet the required performance for running stability and reduce the elastic vibrations in the car body.

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A Control Method for Hybrid Tilting Systems using Tilting Beams and Air Spring Inclination

Cited by 4 publications

References 4 publications

Research Topics on Railway Vehicle Dynamics

Research Topics on Railway Vehicle Dynamics

Active Control of Airspring Secondary Suspension to Improve Ride Quality and Safety against Crosswinds

<b>Development of Longitudinal Excitation Suppression Devices for Reducing Car-body Elastic Vibrations in Bullet Trains</b>

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