Semi-active Suspension Applied on Carbody underneath Suspended System of High-speed Railway Based on Optimal Control Theory

被引：2
|
作者：
Wang Q. [1 ]
Zeng J. [1 ]
Zhu B. [1 ]
Wu Y. [1 ]
Wang Y. [1 ]
机构：
[1] State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2020年 / 56卷 / 04期
关键词：
Carbody underneath suspended system; Carbody vibration reduction; High-speed railway train; LQR algorithm; Semi-active control;
D O I：
10.3901/JME.2020.04.160
中图分类号：
学科分类号：
摘要：
Due to the complexity of the service environment of high-speed trains, the carbody vibration amplitude increases and the passenger ride comfort decreases. Based on the optimal control theory of LQR algorithm, the idea of installing semi-active suspension on carbody underneath suspended system is proposed. Considering carbody flexible and suspended equipment, a coupled vertical vibration model of high-speed railway train is established, which is used to analyze the effect of the weighted coefficient R of the LQR algorithm on carbody vibration reduction, and also compared the effects of the passive suspension and the semi-active suspension. The results show that reducing the weighting coefficient R is beneficial to reducing carbody elastic vibration, and when the weighting coefficient is reduced to 1×10-5, the elastic vibration would be significantly reduced. However, it does not affect the rigid vibration. The effect of the semi-active suspension on the vibration control of the vehicle body is closely related to the elastic vibration energy of the vehicle body. The greater the elastic vibration energy of the vehicle body, the better the control effect of the semi-active suspension is. When the body is elastically vibrated, the vibration reduction effect of the semi-active suspension body is significantly better than that of the passive suspension. Under the running speed of obvious carbody elastic vibration, the RMS value of the body vibration under the semi-active suspension is reduced by about half. © 2020 Journal of Mechanical Engineering.
引用
收藏
页码：160 / 167
页数：7
相关论文
共 16 条
  • [1] Shi H., Luo R., Wu P., Et al., Application of DVA theory in vibration reduction of carbody with suspended equipment for high speed EMU, Science China Technological Sciences, 57, 7, pp. 1425-1438, (2014)
  • [2] Shi H., Luo R., Wu P., Et al., Suspension parameters designing of equipment for electric multiple units based on dynamic vibration absorber theory, Journal of Mechanical Engineering, 50, 14, pp. 155-161, (2014)
  • [3] Shi H., Wu P., Luo R., Coupled vibration characteristics of flexible car body and equipment of EMU, Journal of Southwest Jiaotong University, 49, 4, pp. 693-699, (2014)
  • [4] Wang Q., Zeng J., Luo G., Et al., Study on vibration behavior of carbody underneath suspended systems under wheel profile wear, Journal of Mechanical Engineering, 52, 10, pp. 113-118, (2016)
  • [5] Luo G., Zeng J., Luo R., The influence of underframe equipment suspended types on carbody vibrations, Journal of China Railway Society, 37, 5, pp. 9-14, (2015)
  • [6] Tomioka K., Takigami T., Reduction of bending vibration in railway carbodies using carbody-bogie dynamic interaction, Vehicle System Dynamic, 48, pp. 467-486, (2010)
  • [7] Zhou J., Goodall R., Ren L., Et al., Influence of carbody vertical flexibility on ride quality of passenger railway vehicles, Journal of Rail and Rapid Transit, 223, 5, pp. 461-471, (2009)
  • [8] Zhao J., Zhang W., Sun W., Et al., Vibration reduction analysis of the dynamic vibration absorber on the flexible carbody of railway vehicles, China Railway Science, 30, 3, pp. 86-90, (2009)
  • [9] Wang Q., Zeng J., Wei L., Et al., Research on vibration reduction of carbody underframe suspended system applied with two-stage suspension in high-speed EMU, Journal of Mechanical Engineering, 54, 8, pp. 1-7, (2018)
  • [10] Schandl G., Lungner P., Benatzky C., Et al., Comfort enhancement by an active vibration reduction system of a flexible railway car body, Vehicle System Dynamic, 45, 9, pp. 835-847, (2007)
12