摘  要：随着电子技术的飞速发展，电控技术在汽车上得到广泛应用。本文针对传统被动悬架平顺性差，主动悬架成本较高的问题,提出了一种在模糊控制规则下的半主动悬架系统以实现悬架成本与性能的折中,并利用Matlab对该系统进行仿真。结果表明，应用模糊控制的半主动悬架系统可以有效提高汽车的行驶平顺性并降低成本。   关键词：汽车；半主动悬架；模糊控制；仿真   中图分类号：U467.5+23 文献标识码：A 文章编号：1672-4984（2007）04-0060-03   Analysis of properties of semi-active suspension YI bei-hua， ZHANG Gai （National Institute of Measurment and Testing Technology，Chengdu 610021，China）   Abstract： The electronic control technology is widely used on automobile with the development of electronics. This paper discussed the bad riding comfort of traditional suspension and the high cost of active suspensions. A two-degree-freedom vehicle control of the semi-active suspensions was established and a fuzzy controller was designed in order to reach a compromise between the two problems mentioned above. This system was numerically simulated in Matlab. The results show that using fuzzy control can realize the improvement of riding comfort and reduce the cost effectively.  

Key words: Vehicle; Semi-active suspension; Fuzzy controller; Simulation