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Application of semi-active yaw dampers for the improvement of the stability of high-speed rail vehicles: mathematical models and numerical simulation
Vehicle System Dynamics ( IF 3.6 ) Pub Date : 2021-04-08 , DOI: 10.1080/00423114.2021.1912366
Xu Wang 1 , Binbin Liu 2 , Egidio Di Gialleonardo 2 , Ivo Kovacic 3 , Stefano Bruni 2
Affiliation  

The aim of this work is to introduce a new concept for a hydraulic semi-active yaw damper (SAYD) for the improvement of the stability of a high-speed rail vehicle. This concept represents a further elaboration of Secondary Yaw Control but envisages the use of semi-active hydraulic dampers instead of full-active electromechanical dampers, simplifying the design of the system and facilitating the design of a safe and fault tolerant device. Two control algorithms are proposed for the semi-active damper: maximum power point tracking and skyhook with Karnopp approximation. A multi-physics model of the SAYD is introduced and used in co-simulation with a multi-body model of a high-speed vehicle. Using these models, numerical simulations are performed to assess the behaviour of the semi-active damper in terms of improving the running stability of the rail vehicle at very high speed, showing that the use of the SAYD in combination with any of the two control strategies considered allows to improve substantially the stability of the vehicle. The results of experimental investigations performed in the project will be reported in a companion paper.



中文翻译:

半主动偏航阻尼器在提高高铁车辆稳定性中的应用:数学模型与数值模拟

这项工作的目的是介绍一种用于提高高速铁路车辆稳定性的液压半主动偏航阻尼器 (SAYD) 的新概念。这一概念代表了对二次偏航控制的进一步阐述,但设想使用半主动液压阻尼器代替全主动机电阻尼器,从而简化系统设计并促进安全和容错装置的设计。为半主动阻尼器提出了两种控制算法:最大功率点跟踪和卡诺普近似的天棚。介绍了SAYD的多物理模型,并将其与高速车辆的多体模型进行联合仿真。使用这些模型,进行数值模拟以评估半主动阻尼器在提高轨道车辆高速运行稳定性方面的行为,表明将 SAYD 与所考虑的两种控制策略中的任何一种结合使用可以提高基本上车辆的稳定性。该项目中进行的实验研究结果将在配套论文中报告。

更新日期:2021-04-08
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