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Semi-active control of primary suspensions to improve ride quality in a high-speed railway vehicle.
- Source :
-
Vehicle System Dynamics . Oct2023, Vol. 61 Issue 10, p2664-2688. 25p. - Publication Year :
- 2023
-
Abstract
- Semi-active suspensions are seen as a promising technology to improve ride quality in high-speed railway vehicles as they provide substantial benefits not achievable through an optimisation of the passive suspension while avoiding some drawbacks of full-active control. Previous works showed that semi-active primary suspensions (SAPS) offer significant improvement of ride quality. However, published implementations of this concept did not consider the coupling effects between car-body and bogie vibrations, which play a decisive role in the success of control strategies for SAPS. This paper provides a comprehensive analysis of SAPS to improve vehicle ride comfort, with special attention to the mitigation of car-body bending vibration. A vehicle model considering the coupling of car-body bending and bogie pitch is proposed and used for the synthesis of an LQG controller. The performance of the semi-active suspension and controller is assessed using a detailed flexible multibody system of a high-speed vehicle. The proposed control scheme is shown to be highly effective in reducing car-body vibration in the entire frequency range of interest from 1 Hz to20Hz. A remarkable ride comfort improvement is found in the entire speed range from 150 km/h to 350 km/h. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00423114
- Volume :
- 61
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Vehicle System Dynamics
- Publication Type :
- Academic Journal
- Accession number :
- 171584344
- Full Text :
- https://doi.org/10.1080/00423114.2022.2128827