Abstract:A vertical dynamic model with active primary suspension of railway vehicles is built, which covers effects of car body flexibility and all vertical rigid modes. The model is simulated and researched by the control laws of railway vehicle active suspension which are designed according to optimal control theory, based on track irregularity spectrum and time delay between axles. The results show that optimal control of preview based on track spectrum and time delay between axles is more effective with regarding of the effects of car body vibration control; the acceleration transmissibility from track to flexible car body center can be reduced by optimal control, rigid-body and flexible vibration also can be controlled; low frequency vibration near 1Hz and vibration of frequencies between 4 Hz and 10 Hz of car body can be controlled effectively by optimal control simultaneously, but almost no effects to high frequency vibration, the response frequency range of actuator can be selected accordingly. Comparing with active secondary suspension system, vehicles with active primary suspension could control the vibration of flexible car body better and have effects on a wider frequency range so as to provide advices for choosing vibration reduction methods.
孙文静;周劲松;宫岛. 弹性车体垂向运行平稳性一系最优控制研究 [J]. , 2012, 31(12): 150-154,.
Sun Wen-jing;Zhou Jin-song;Gong Dao. Vertical Ride Quality of Flexible Car body Railway Vehicles with Optimal Control on Primary Suspension. , 2012, 31(12): 150-154,.