基于线性矩阵不等式的汽车主动悬架H_2控制  

Linear-Matrix-Inequalities Based H_2 Controller for Active Suspension

作　　者：顾臻飞 麦云飞[1] Gu Zhenfei;Mai Yunfei(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海市200093

出　　处：《农业装备与车辆工程》2019年第1期41-44,共4页Agricultural Equipment & Vehicle Engineering

摘　　要：通过状态空间微分方程建立了半车主动悬架数学模型,以包含随机脉冲的白噪声来描述路面不平度,范数约束系统多目标性能输出,广义H_2范数约束系统时域硬约束。基于线性矩阵不等式求解Riccati方程,建立最优状态反馈控制器以保证系统的Lyapunov稳定性与动态性能。基于Simulink对传统PID控制器与H_2控制器进行仿真。结论表明,设计的H_2控制器相比传统汽车控制器有更优的扰动抑制与鲁棒性。A half-car hydraulic active suspension model was established based on state space differential equations.Road roughness was described through the white noise included random pulses,H2 norm was applied to minimize the multi-objects performance output;General H2 norm was used to satisfy the hard time-domain constraints.The optimal state-feedback controller was constructed and the Lyapunov stability and dynamic performance was promised by solving LMIs(linear matrix inequalities)of the Riccati equations.The traditional PID controller and H2 controller were simulated by Simulink.The disturbance attenuation and robustness were proved more superior compared with the traditional vehicle controller.

关 键 词：主动悬架 H2最优控制 线性矩阵不等式 扰动抑制 

分 类 号：U463.33[机械工程—车辆工程]