Influence of Semi-Active Suspension on Running Safety of Vehicles

  • Liu, Hong-You (Semi-active Suspension Department, Qingdao Sifang Rolling Stock Research Institute Co.,Ltd) ;
  • Yu, Da-Lian (Technique Center, CSR Sifang Locomotive and Rolling Stock Co.,Ltd)
  • Published : 2009.12.31


Railway vehicles equipped with semi-active suspension system can improve the ride quality of car bodies. Semi-active suspension system is usually applied onto high speed train, and therefore higher running safety requirement is proposed. The influence of semi-active suspension system on safety of vehicles running on straight line and curve line is studied, and the influences of sky hook damping coefficient and system time-delay on operation safety of cars fitted with semiactive suspension system is analyzed. The results show that the vehicles equipped with semi-active suspension system, not only the vibration of car body is decreased, it can also give little influence on running safety of cars, as a result, it will not endanger the running safety of cars.