摘要
针对油气悬架阻尼实时控制中的车身振动状态测量问题,建立了油气悬架整车7自由度振动模型的状态方程,并基于该状态方程设计了油气悬架整车振动状态观测器。该状态观测器以油气悬架油缸压力为输入,以悬架动行程误差作为反馈,通过设计观测器的反馈增益,使得观测器状态能够跟踪被观测车辆的真实状态。状态观测值与试验测试值的对比表明,所设计的状态观测器能够有效观测出油气悬架车辆的振动状态。
In order to measure vehicle body vibration state in the damping real-time control of hydro-pneumatic suspension,a state equation of vehicle model with 7 degree-of-freedom of hydro-pneumatic suspension was established,and the hydro-pneumatic vehicle vibration state observer was designed based on this state equation.Cylinder pressure was adopted as the input of the state observer and suspension deflection was used as a feedback.By designing the observer feedback gain,the observer can track the real state of the observed vehicle.The comparison between the observed value and the test value shows that the designed state observer can observe the vibration states of the hydro-pneumatic suspension vehicle effectively.
出处
《汽车技术》
北大核心
2011年第8期17-21,共5页
Automobile Technology
基金
国家"十一五"预研基金资助项目(C2220061355)
关键词
油气悬架
整车
振动
观测器
Hydro-pneumatic suspension
Vehicle
Vibration
Observer
