基于模糊内模控制磁流变半主动悬架的时滞研究  

Study on Time Lag of Magnetorheological Semi-active Suspensions Based on Fuzzy Internal Model Control

作　　者：杨小卫[1] 周孔亢[1] 贾永枢[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《机床与液压》2008年第6期119-122,124,共5页Machine Tool & Hydraulics

摘　　要：时滞导致磁流变减振器可控阻尼力的不同步,降低了车辆半主动悬架的性能及其稳定性。基于半主动悬架临界时滞理论的分析,建立了含有时滞的磁流变半主动悬架的数学模型与传递函数,为其控制系统的时滞研究提供了理论依据;并在模糊控制策略的基础上,运用内模理论对控制系统进行时滞补偿。研究表明进行时滞补偿的系统改善了悬架性能。Time-delay causes unsynchronized function of control damping force which degrades the performance and stability of magnetorheological semi-active suspensions, Based on analyzing arbitrary time delay of semi-active suspension, the mathematical model and the transfer function of magnetorheological semi-active suspension with delay were established. Based on fuzzy control , the control system with compensated time-delay was studied by using internal model control. The study shows the time-delay compensation control system improves the performance of suspensions.

关 键 词：时滞 磁流变 模糊控制 内模控制 时滞学习控制 

分 类 号：TH113.22[机械工程—机械设计及理论]