车辆悬架系统的能控性能观测性分析及仿真

An Analysis of the Controllability and Observability and Simulation of Vehicle Suspension System

建立了被动悬架与主动悬架系统的模型 ,通过状态空间法 ,运用Matlab语言 ,对系统的状态量和输出量的能控性和能观测性进行了计算分析 ,并提出了当状态不完全能控时 ,判断哪一个状态量不能控的方法 以某车为例 ,得到了悬架系统对于力执行机构输入u既能控又能观测 ,而对于路面输入不完全能控 。

Models of passive and active suspension systems are set up.Based on the state space approach,applying the Matlab language,the controllability and observability of the systems′ state and output variables are analyzed and the approach to judge when the system is not completely controllable,which state variable is uncontrollable is represented.Based on parameters of a vehicle,we reach the conclusion that,as far as the actuator input is concerned,the system is completely controllable and observable,but it is not in terms of the road input,and that the road input does not directly affect spring mass.