摘要
研究时滞对具有“天棚”阻尼控制的1/4 汽车悬架模型的动特性影响。文中给出了不同“天棚”阻尼控制增益和减振器被动阻尼下导致系统失稳的临界时滞以及全时滞稳定区,通过数值方法讨论了时滞对系统频响特性的影响,指出时滞主要影响悬架系统的低频特性。
The paper presents a case study of the effect of time delay in the control path on the dynamic performance of a 1/4 car model of active vehicle suspension equipped with “sky hook” damper. The critical time delay that results in the instability of the active suspension system and the stable region for arbitrary time delay are given under various combinations of feedback gain and passive damping in vibration isolator. The effect of time delay on the dynamic performance of the model is discussed through the use of numerical simulations in the frequency domain and time domain, respectively. It is pointed out that the time delay mainly affects the dynamic performance of suspension system in the lower frequency band and result in the instability of the first natural mode of suspension system.
出处
《振动工程学报》
EI
CSCD
1999年第4期486-491,共6页
Journal of Vibration Engineering
基金
国家杰出青年科学基金!(59625511)
国家留学基金委员会留学回国人员资助
关键词
稳定性
时滞
悬架
汽车
天棚阻尼
控制
stability
time delay
vehicle suspension
sky hook damper
