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基于LMI优化的车辆非平稳行驶下的主动悬架控制研究 被引量:1

Study on the Vehicle Active Suspension Control System of Non-Stationary Running Under Random Excitation Based on LMI
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摘要 使用有边界条件下的鲁棒H∞控制理论,并且利用线性矩阵不定式(LMI)优化技术,对行驶在非平稳状态下的半车车辆模型的主动悬架进行了控制仿真研究。提出了非平稳行驶状态下基于LMI的车辆的主动悬架的控制策略。运用仿真软件MATLAB,分别对车辆垂直方向上振动响应的频域特性、车辆模型参数的不确定性和垂直振动响应时域特性等方面分析了车辆非平稳行驶时的平顺性,给出了半车车辆模型的主动悬架控制系统与被动悬架系统的仿真比较,因此证明了所研究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有力的理论依据。 The half-vehicle model robust control simulation is performed by using robust control theory and linear matrix inequalities (LMI) technique based on the condition of non-stationary running. A control method of active suspension is put forward through the LMI optimization method. By means of MATLAB simulation tools, the ride for non-stationary running is analyzed forming the fiequent characteristics, the time domain characteristics and the uncertainty of the model parameters. A simulation of this model is presented to compare the suspension system of active and passive. Simulation results show feasibility and effectiveness. The analysis results provide fundamental basis for the research of active control suspension system.
作者 张丽萍
出处 《机械设计与制造》 北大核心 2015年第11期232-235,共4页 Machinery Design & Manufacture
基金 辽宁省博士启动基金:受随机激励车辆和座椅悬架的鲁棒H∞集成控制研究(20141130) 高校杰出青年学者成长计划(LJQ2014065)
关键词 控制 主动悬架 路面非平稳激励模型 线性矩阵不等式 被动悬架 平顺性 Control Active Suspension Non-Stationary Running of Vehicle Linear Matrix Inequalities Passive Su- spension Ride
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参考文献10

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