Hydraulic actuation technology for full- and semi-active railway suspensions

Goodall, Roger M.; Freudenthaler, Gerhard; Dixon, Roger

doi:10.1080/00423114.2014.953181

Cited by 11 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The forces from the secondary suspension and primary suspension are computed according to equation (7), in which u s1 and u s2 are input control forces for active or semi-active secondary suspension and u p1 to u p4 are control forces for active or semi-active primary suspension. For the control forces u, two simplified models are introduced to reflect the response time of actuators and semi-active damper.…”

Section: Simplified 9-dof Vehicle Modelmentioning

confidence: 99%

An examination of alternative schemes for active and semi-active control of vertical car-body vibration to improve ride comfort

Bruni

2021

Proceedings of the Institution of Mechanical Engineers, Part F:

View full text Add to dashboard Cite

The recent tendency to reduce the weight of car bodies is posing a new challenge to vertical ride quality, since the vibrations related to car-body vertical bending modes affect heavily passengers’ comfort and cannot be fully mitigated by conventional vehicle suspensions. In this work, four mechatronic suspensions, considering active and semi-active technologies in secondary and primary suspensions, are compared to show their relative merits. LQG and H∞ model-based control strategies are established in a consistent way for each suspension scheme to perform a comparative assessment of the four concepts on objective grounds. A two-dimensional 9-DOF vehicle model is firstly built, using a simplified representation of car-body bending modes; this model is also used to design the model-based controllers. The comparison of the four mechatronic suspension schemes based on the 9-DOF model shows that full-active secondary suspension is the most effective solution whilst semi-active primary suspension is also effective in terms of mitigating car-body bending vibration. Then, a three-dimensional flexible multibody system (FMBS) vehicle model integrated with a finite-element car-body is considered to allow a more detailed consideration of the vehicle’s vibrating behaviour. The results of the FMBS model show a good agreement to the results of the 9-DOF model and the relative merits of the four mechatronic suspension schemes as found from the previous analysis are basically confirmed, although the FMBS model is more suited for a quantitative assessment of ride quality.

show abstract

Section: Simplified 9-dof Vehicle Modelmentioning

confidence: 99%

An examination of alternative schemes for active and semi-active control of vertical car-body vibration to improve ride comfort

Bruni

2021

Proceedings of the Institution of Mechanical Engineers, Part F:

View full text Add to dashboard Cite

show abstract

“…The most effective of the numerical optimization methods, a method of the Nelder-Mead deformed polyhedron made it possible, over a relatively short time, to solve a problem using a model of any complexity. Authors of papers [9][10][11][12][13][14][15][16] apply various techniques to fully describe the physical process at modeling and use numerical methods. Using numerical methods does not allow obtaining a law that controls parameters of elastic-dissipative relations; that can be noted as shortcomings of the papers considered below.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The author also addresses longer-term trends in the development of suspension. Paper [10] describes a simulation study that provides a comprehensive comparison between the fully active and semi-active suspensions in order to improve the quality of vertical dynamics of railroad vehicles. The study includes the assessment of advantages of dynamics quality that could be theoretically achieved using idealized devices; it also explores the impact of real devices based on the technology of a hydraulic drive.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Development of the procedure for verifying the feasibility of designing an active suspension system for transport carriages

Erhovа

Bondarenko

Shibko

et al. 2018

EEJET

View full text Add to dashboard Cite

“…Over the last few decades, a variety of railway actuator types have been studied. Hydraulic actuators are compact and can easily be installed in the narrow spaces between the car body and the bogie [5,6]; however, they have a low control bandwidth and are at risk of oil leakage [7,8]. Furthermore, in order to control the force of hydraulic actuators, the hydraulic valve must be driven by an additional low-power electromagnetic actuator [9].…”

Section: Introductionmentioning

confidence: 99%

Design of a Tubular Permanent Magnet Actuator for Active Lateral Secondary Suspension of a Railway Vehicle

et al. 2017

View full text Add to dashboard Cite

This paper describes the finite element (FE)-based design of a slotted tubular permanent magnet actuator (TPMA) used in railway vehicle active lateral secondary suspension that improves the actuator's thrust and lowers its cogging force under thermal and geometric constraints. To consider the electromagnetic and thermal fields and the complex interactions among the design variables, design was carried out in an electromagnet and thermal field environment using accurate and time-effective FE analysis. A six-slot prototype model was fabricated to estimate critical thermal parameters, which are difficult to compute without experiments. Three-dimensional FE analysis using the determined thermal parameters was adopted to calculate the precise thermal distribution of the TPMA and verify the forced air-cooling effect. A prototype TPMA with a quasi-Halbach array of permanent magnets and a moving magnet was manufactured through the FE-based design process; the dynamic, electromagnetic, and thermal characteristics of the prototype TPMA were validated experimentally.

show abstract

Hydraulic actuation technology for full- and semi-active railway suspensions

Cited by 11 publications

References 6 publications

An examination of alternative schemes for active and semi-active control of vertical car-body vibration to improve ride comfort

An examination of alternative schemes for active and semi-active control of vertical car-body vibration to improve ride comfort

Development of the procedure for verifying the feasibility of designing an active suspension system for transport carriages

Design of a Tubular Permanent Magnet Actuator for Active Lateral Secondary Suspension of a Railway Vehicle

Contact Info

Product

Resources

About