| 6自由度半车悬架解耦及其分层振动控制的研究 |
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| 引用本文： | 吴龙,闻霞.6自由度半车悬架解耦及其分层振动控制的研究[J].汽车工程,2010,32(2). |
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| 作者姓名： | 吴龙 闻霞 |
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| 作者单位： | 三明学院物理与机电工程系,三明,365004 |
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| 基金项目： | 建省自然基金青年人才项目，三明市科技项目，福建省教育厅科技项目，省高校服务海西项目 |
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| 摘 要： | 通过对6自由度半车悬架簧载质量的受力分析,推导出其前后1/4悬架间的定量耦合关系,并以其为基础构建分层振动控制算法.中央控制层以悬架质心处的垂向加速度和俯仰角加速度为控制目标,前后两个1/4悬架构成的两个底层分别采用H_∞和LQR控制策略,并接受中央控制层的协调指令.利用MATLAB的仿真表明,与传统控制相比,分层控制由于前后两个1/4悬架的控制量可以并行解算,计算时间大幅缩短,因而可针对路面激励实施详尽的控制,达到了改善车辆行驶平顺性的目的.
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| 关 键 词： | 半车悬架 耦合关系 分层控制 仿真 |
A Research on the Decoupling of a 6 DOF Half Vehicle Suspension and Its Hierarchical Vibration Control |
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| Wu Long,Wen Xia.A Research on the Decoupling of a 6 DOF Half Vehicle Suspension and Its Hierarchical Vibration Control[J].Automotive Engineering,2010,32(2). |
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| Authors: | Wu Long Wen Xia |
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| Institution: | Wu Long & Wen XiaDepartment of Physics , Electromechanical Engineering,Sanming University,Sanming 365004 |
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| Abstract: | Through force analysis on the sprung mass of a 6 DOF half vehicle suspension, the quantitative coupling relationship between the front and rear quarter suspensions is derived, and based on which a layered vibra-tion control algorithm is constructed. The vertical and pitch accelerations at the mass center of suspension are taken as the control objectives of central control layer. Two base layers formed by the front and rear quarter suspensions a-dopt H_∞ and LQR (linear quadratic regulator) control strategies respectively and receive coordinating instructions from central control layer. The results of simulation with MATLAB show that compared with traditional control, the great reduction in computing time due to the possibility of parallel computation of control variables for the front and rear quarter suspensions enables layered control scheme exert thorough control based on road excitation, so achie-ving the aim of improving the ride comfort of vehicle. |
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| Keywords: | half vehicle suspension coupling relationship hierarchical control simulation |
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