Design and Evaluation of a Semi-Active Damping System for Rail Vehicles

Stribersky, Anton; Kienberger, Andreas; Wagner, Günther A.; Müller, Herbert

doi:10.1080/00423119708969594

Cited by 9 publications

(11 citation statements)

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“…Introduced by Karnopp et al ,5 semi-active dampers have been studied and used for vehicle suspension systems from automobiles to heavy trucks and railway vehicles. The main semi-active devices that have been considered for transit engineering applications are variable orifice dampers, [6][7][8][9] which are composed of oil-cylinders and mechanical valves, so the system reliability may be reduced and the maintenance may be costly. Especially, the time delays of the valves with mechanical elements will degrade the performance of the suspension systems.…”

Section: Introductionmentioning

confidence: 99%

Ride quality improvement ability of semi-active, active, and passive suspension systems for railway vehicles

Wang

Liao

2003

SPIE Proceedings

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It is one of effective ways to increase the running speed of railway vehicles to make the railways more competitive with air transport while providing better safety. However, the high speed of the train would cause significant car body vibrations, which induce the following problems: the ride stability, the ride quality, and the cost of track maintenance. Thus various kinds of railway vehicle suspensions, which can be categorized as passive, active, and semi-active types, have been designed to cushion riders from vibrations. In this paper, it is aimed to investigate semi-active suspension systems using magnetorheological (MR) fluid dampers for improving the ride quality of railway vehicles. A full-scale railway vehicle model with seventeen degrees of freedom is proposed to cope with lateral, yaw and roll motions of the car body, trucks and wheelsets. The governing equations of the railway vehicle integrated with MR fluid dampers in the secondary suspension are developed and the LQG control law using the acceleration feedback is adopted, in which the state variables are estimated from the measurable accelerations with the Kalman estimator. The performance of the semi-active suspension system exploiting MR fluid dampers is compared with those of the active suspension system with linear and unconstraint actuators and the passive suspension system with springs and oil dampers. The results show that the semi-active suspension system with MR fluid dampers possesses a good ride quality improvement ability.

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Section: Introductionmentioning

confidence: 99%

Ride quality improvement ability of semi-active, active, and passive suspension systems for railway vehicles

Wang

Liao

2003

SPIE Proceedings

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“…welche sich vereinfachen lässt zu 1,694 · 10 6 0,4 8,530 · 10 4 4,807 · 10 6 0, 5 1,272 · 10 5 7,858 · 10 6 0, 6 1,685 · 10 5 1,084 · 10 7 √ 2/2 2,119 · 10 5 1,396 · 10 7 2,0 6,754 · 10 5 4,684 · 10 7 3,0 1,012 · 10 6 7,239 · 10 7 schematisch dargestellten Kinematik wirkt. Dieses Gesetz wird im Folgenden als Passive Wagenkastendämpfung bezeichnet.…”

Section: Das Skyhook-prinzipunclassified

Potenziale aktiver und semiaktiver Skyhook-Regelgesetze in der Sekundärfederstufe von Schienenfahrzeugen (Potentials of Active and Semiactive Skyhook Control Laws applied to the Secondary Suspensions of Railway Vehicles)

Hohenbichler¹,

Six²

2006

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Im vorliegenden Beitrag wird das Potenzial nach dem Skyhook-Gesetz hochdynamisch geregelter aktiver und semiaktiver Fahrwerksregelungen in der Sekundärfederstufe von Schienenfahrzeugen hinsichtlich Fahrkomfort und unter Berücksichtigung der resultierenden Federwege untersucht. Es wird eine systematische Vorgehensweise vorgestellt, die es ermöglicht, einen sinnvollen Vergleich zwischen passiven und aktiven Systemen zu führen. Die Untersuchungen zeigen, dass der Komfortgewinn der untersuchten Skyhook-Konzepte auf dem betrachteten Fahrweg bei idealer Sensorik, Aktorik und Signalverarbeitung aufgrund der deterministischen Trassierung nicht mehr als 10% beträgt.In this paper the potential of skyhook controlled active and semiactive force elements in the secondary suspension of rail vehicles in relation to ride comfort and suspension deflection is investigated. A systematical approach is presented, which leads to a reasonable comparison between passive and active systems. It is shown, that using ideal sensors, force elements and signal processing the benefit in ride comfort of the investigated skyhook concepts is no more than 10% due to the deterministic part of the investigated track.

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“…Therefore, semi-active suspensions are proposed to overcome those shortcomings as aforementioned in order to achieve high performance while the systems are stable and fail-safe. The main semi-active devices that have been considered for railway vehicles are variable orifice dampers [7][8][9][10] , which are composed of hydraulic cylinders and mechanical valves, so the system reliability may be reduced and the maintenance may be costly due to the use of valves. Besides, the time delays of the valves would degrade the performance of the suspension system 8 .…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a magnetorheological damper for train suspension

Lau

Liao

2004

SPIE Proceedings

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The development of high-speed railway vehicles has been a great interest of many countries because high-speed trains have been proven as an efficient and economical transportation means while minimizing air pollution. However, the high speed of the train would cause significant car body vibrations. Thus effective vibration control of the car body is needed to improve the ride comfort and safety of the railway vehicle. Various kinds of railway vehicle suspensions such as passive, active, and semi-active systems could be used to cushion passengers from vibrations. Among them, semi-active suspensions are believed to achieve high performance while maintaining system stable and fail-safe. In this paper, it is aimed to design a magnetorheological (MR) fluid damper, which is suitable for semi-active train suspension system in order to improve the ride quality. A double-ended MR damper is designed, fabricated, and tested. Then a model for the double-ended MR damper is integrated in the secondary suspension of a full-scale railway vehicle model. A semi-active on-off control strategy based on the absolute velocity measurement of the car body is adopted. The controlled performances are compared with other types of suspension systems. The results show the feasibility and effectiveness of the semi-active train suspension system with the developed MR dampers.

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Design and Evaluation of a Semi-Active Damping System for Rail Vehicles

Cited by 9 publications

References 0 publications

Ride quality improvement ability of semi-active, active, and passive suspension systems for railway vehicles

Ride quality improvement ability of semi-active, active, and passive suspension systems for railway vehicles

Potenziale aktiver und semiaktiver Skyhook-Regelgesetze in der Sekundärfederstufe von Schienenfahrzeugen (Potentials of Active and Semiactive Skyhook Control Laws applied to the Secondary Suspensions of Railway Vehicles)

Design and analysis of a magnetorheological damper for train suspension

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