摘要
为减少电动静液压(EHA)主动悬架作动器失效对车辆动态特性的影响,设计了一种基于振动状态估计的EHA主动悬架切换控制策略。建立EHA作动器失效模型,基于卡尔曼滤波算法,以悬架系统状态变量残差与簧载质量加速度作为复合切换条件,设计了一种EHA主动悬架切换控制策略,并进行了仿真和台架试验。结果表明,该切换控制策略在作动器失效后能够进行模式切换,可消除切换紊乱现象,并在短暂时滞后,使EHA主动悬架性能恢复至与正常悬架相近的水平,改善了作动器失效造成的车辆动态特性恶化问题。
In order to reduce the effect of the failure of Electro-Hydrostatic Actuator(EHA)active suspension actuator on the dynamic characteristics of the vehicle,an EHA active suspension switching control strategy based on vibration state estimation is designed.The EHA actuator failure model is established.The EHA active suspension switching control strategy is designed based on Kalman filter algorithm with suspension system state variable residual and sprung mass acceleration as compound switching condition,then simulation and rig test are conducted.The results show that the switching control strategy can perform mode switch after the actuator fails,eliminate the switching disorder,make the EHA active suspension performance restored to a level similar to the normal suspension after a short period of time-lag,which significantly improves the deterioration of the dynamic characteristics of the vehicle caused by the actuator failure.
作者
许家楠
寇发荣
马建
彭先龙
张海亮
Xu Jia’nan;Kou Farong;Ma Jian;Peng Xianlong;Zhang Hailiang(Xi’an University of Science and Technology,Xi’an 710054;Chang’an University,Xi’an 710064)
出处
《汽车技术》
CSCD
北大核心
2019年第12期53-58,共6页
Automobile Technology
基金
国家自然科学基金项目（51775426）
陕西省重点研发计划项目（2018ZDCXL-GY-05-04）
西安市碑林区2019年应用技术研发类项目（GX1928）
