A practical approach to active lateral suspension for railway vehicles

Park, Joonhyuk; Shin, Yujeong; Hur, Hyun-Moo; You, Won-Hee

doi:10.1177/0020294018819539

Cited by 10 publications

(11 citation statements)

References 14 publications

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“…The weight function of KS R 9216 for evaluating lateral ride comfort is very similar to guidelines UIC 513 and ISO 2631. 16 Lateral accelerations were measured on the cab-end floor (above the cab-end bogie) and the non-cab end floor (above the non-cab end bogie) of the M1 car.…”

Section: Field Testsmentioning

confidence: 99%

Investigation of low damped carbody oscillation for Korean high-speed EMU experimental train

Park

2021

Proceedings of the Institution of Mechanical Engineers, Part F:

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This study describes the low damped carbody oscillations of the HEMU-430X, a high-speed electric-multiple-unit experimental train of Korea. The HEMU-430X had already undergone a kind of hunting problem in the test period, but it was effectively suppressed through several measures and the test was finished successfully. However, recently, the HEMU-430X again experienced the similar but slightly different problem after its wheel profile was changed to XP55, which is widely used in high-speed trains in Korea. In this paper, the eigenbehavior and system damping ratio are analyzed using a linearized vehicle model to more systematically investigate the cause of the carbody oscillation of the HEMU-430X. The results show that the bogie lateral movement coupled with carbody upper sway has the least damping ratio in the case of the HEMU-430X and the magnitude of yaw directional constraints of the bogie plays an important role in causing the carbody oscillation. Parametric studies for suspension, equivalent conicity and creep coefficients are carried out. A solution is suggested and it is validated using field tests.

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Section: Field Testsmentioning

confidence: 99%

Investigation of low damped carbody oscillation for Korean high-speed EMU experimental train

Park

2021

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…Instead, the control is purely based on an optimal mathematic model. This control Fail-safe control scheme for active lateral suspension system [75] idea can be applied for other multi-objective control targets, as is shown in Eq. (2) [59].…”

Section: (F) Inter-vehicle Actuator Controlmentioning

confidence: 99%

“…In recent years, Korea Railroad Research Institute carried out roller rig tests and field tests for active lateral suspension [75]. Electromagnetic actuators were implemented, and sky- or 'red' threshold, the control commands for active suspension were reduced (60%) or deactivated.…”

Section: Implementation Of Active Secondary Suspension In Lateral Dirmentioning

confidence: 99%

Active suspension in railway vehicles: a literature survey

Giossi

Persson

et al. 2020

Rail. Eng. Science

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Since the concept of active suspensions appeared, its large possible benefits has attracted continuous exploration in the field of railway engineering. With new demands of higher speed, better ride comfort and lower maintenance cost for railway vehicles, active suspensions are very promising technologies. Being the starting point of commercial application of active suspensions in rail vehicles, tilting trains have become a great success in some countries. With increased technical maturity of sensors and actuators, active suspension has unprecedented development opportunities. In this work, the basic concepts are summarized with new theories and solutions that have appeared over the last decade. Experimental studies and the implementation status of different active suspension technologies are described as well. Firstly, tilting trains are briefly described. Thereafter, an indepth study for active secondary and primary suspensions is performed. For both topics, after an introductory section an explanation of possible solutions existing in the literature is given. The implementation status is reported. Active secondary suspensions are categorized into active and semi-active suspensions. Primary suspensions are instead divided between acting on solid-axle wheelsets and independently rotating wheels. Lastly, a brief summary and outlook is presented in terms of benefits, research status and challenges. The potential for active suspensions in railway applications is outlined.

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“…Ripamonti and Chiarabaglio (2019) modified a traditional passive oil damper with a proper servo-valve to optimize the ride quality. Park et al (2019) installed an active lateral suspension system adopting an electromechanical actuator on an actual vehicle and conducted roller rig and field tests, which demonstrated enhancement of lateral ride quality.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations on the semi-active control of a valve-driven secondary lateral damper for a high-speed rail vehicle

Shi

et al. 2022

Journal of Vibration and Control

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Passive suspensions cannot sufficiently reduce vehicle vibrations on tracks with poor irregularities or when the vehicle was operated at higher speeds. This study proposes three semi-active control algorithms for a secondary lateral damper to enable the vehicle to be operated on high-speed dedicated railways at 350 km/h and conventional low-speed railways at 160 km/h. A high-speed rail vehicle dynamics model with controllable dampers is built to study the feasibility of those algorithms through numerical investigations. Then, both field tests on track and lab tests on a full-scale roller rig were performed to examine the functionality of the controller hardware system and the valve-driven semi-active damper. Furtherly, a time-delay compensation based on the signal amplitude is developed and verified. Results from the on-track and roller rig tests state that the proposed semi-active control algorithms and the designed control system can effectively improve the ride quality of the vehicle when it is put into operation in different track conditions and at various speeds.

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A practical approach to active lateral suspension for railway vehicles

Cited by 10 publications

References 14 publications

Investigation of low damped carbody oscillation for Korean high-speed EMU experimental train

Investigation of low damped carbody oscillation for Korean high-speed EMU experimental train

Active suspension in railway vehicles: a literature survey

Experimental investigations on the semi-active control of a valve-driven secondary lateral damper for a high-speed rail vehicle

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