Hong-You Liu/Da-Lian Yu
International Journal of Railway, vol. 3, no. 2, pp.68-72, 2010

Abstract : 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 desirable. 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 operational safety of cars fitted with semi- active suspension system is analyzed. The results show that in vehicles equipped with semi-active suspension system, while the vibration of car body is decreased, the running safety of cars is not affected to any significant degree. As a result, the ride quality is much improved with negligible deterioration of the running safety of cars.

Keyword : Semi-active suspension, On/off damping control, Continuous adjustable damping control, Sky hook, Running