车辆悬架和座椅悬架的鲁棒H_∞集成控制策略

在建立"车-椅-人"车辆集成控制模型的基础上,提出一种基于线性矩阵不等式(LMI)优化技术的主动座椅悬架和车辆主动悬架的鲁棒H∞集成控制策略.以人体垂直加速度响应功率谱密度为控制输出目标,以满足车辆悬架动行程范围、车轮动静载荷比响应和所需的集成控制力要求为约束条件,设计出了座椅悬架和车辆悬架集成状态反馈控制器.通过仿真软件MATLAB进行了集成控制系统的仿真分析与比较,证明了该方法的可行性和有效性,为车辆主动悬架系统的研究提供了理论依据.

Robust H∞ Integrated Control Strategy of Vehicle and Seat Suspensions

Based on the integrated models of ‘vehicle-seat-people’， an integrated vehicle seat and suspension robust H_∞ integrated control strategy was proposed by using linear matrix inequalities (LMI) technique. An H_∞ state feedback controller of integrated vehicle seat and suspension was designed， with the PSD of vertical body acceleration chosen as the controlled outputs and the limits of dynamic suspension deflection， relative dynamic tire load， and integrated control force chosen as the constrained outputs. The MATLAB simulation was employed in the paper， and the simulation results confirm the feasibility and effectiveness. The analysis results provide a fundamental basis for the study of active control suspension system.