基于电流变减振器的汽车悬架系统控制研究

在分析电流变减振器工作机理的基础上，论述了汽车阻尼可变悬架系统的组成，建立了悬架4自由度力学模型。针对汽车悬架系统的不确定性、时变性、非线性和复杂性，设计了自动调整模糊控制器。基于控制系统仿真软件，对路面随机激励信号和确定和确定性扰动进行了系统仿真，并对系统延时和内部参数变动问题进行了仿真研究，研究结果表明所设计的控制器有效、稳定和可靠。

Study on Control for Vehicle Semi-Active Suspension System Based on Electrorheological Damper

On the basis of analyzing the working principle of electrorheological damper, the system constitution of vehicle suspension is discussed; the mechanical model of electrorheological damper is established; and 4 degree of freedom dynamic models of vehicle suspension are described. In the light of uncertainty and non-linearity and complexity of parameters for vehicle suspension system, this paper designs a tunable fuzzy logic controller using without quantification method for vehicle semi-active suspension. Based on MATLAB6. 0 simulation software of control system, the fuzzy logic control system of vehicle suspension for the random excitations and definite disturbances of road is simulated, and the effects of time-delay and system parameter disturbance on vehicle suspension are researched. The numerical simulation shows that the performance of a designed tunable fuzzy logic controller is effective, stable and reliable.