| 基于道路友好性的汽车主动悬架LQG最优控制方法 |
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| 引用本文： | 李金辉,李旭宏,何杰.基于道路友好性的汽车主动悬架LQG最优控制方法[J].武汉水运工程学院学报,2013(5):989-993. |
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| 作者姓名： | 李金辉 李旭宏 何杰 |
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| 作者单位： | [1]东南大学交通学院,南京210096 [2]河南科技大学车辆与动力工程学院,洛阳471003 |
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| 基金项目： | 国家自然科学基金项目（批准号：51078087）、教育部博士点基金博导类课题（批准号：20120092110044）资助 |
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| 摘 要： | 为分析悬架控制对汽车道路友好性的影响,基于简化的二自由度1/4车辆模型,设计了主动悬架LQG最优控制器,并在MATALB/Simulink环境下建立了主动悬架道路友好性仿真模型.基于改善汽车道路友好性的需要,采用层次分析法确定各性能指标权重,并利用Simulink/SRO模块对悬架控制参数进行优化.仿真结果表明,相对于被动悬架,主动悬架能有效降低汽车轮胎动载荷,从而提高道路友好性,且优化后的主动悬架道路友好性能更优.
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| 关 键 词： | 汽车主动悬架 道路友好性 LQG最优控制 层次分析法 Simulink SRO优化 |
LQG Control Method for Vehicle Active Suspension System Based on Road-friendly |
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| Authors: | LI Jinhui LI Xuhong HE Jie |
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| Institution: | 1.School of Transportation, Southeast University, Nanjing 210096, China ; School of Vehicle ＆ Motive Power Engineering, Henan University of Science ＆ Technology, Luoyang 471003, China;) |
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| Abstract: | In order to study the road-friendly effect law of vehicle with active control suspension,a LQG （Linear-Quadratic Gaussian） optimal controller for active suspension system of the 2-dof 1/4 vehicle was designed,and the simulation model of active suspension was constructed in MATALB/Simulink.For the purpose to improve vehicle road-friendly,the evaluating index weights of optimal controller were calculated by AHP （analytic hierarchy process） method,and the control parameters were optimized with Simulink/SRO （Simulink Response Optimization） module.The simulation results showed that,compared to passive suspension,the dynamic tire force of active suspension was decreased,thereby the road-friendly was improved,and the road-friendly of the active suspension system after optimization was better than the un-optimized system. |
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| Keywords: | vehicle active suspension road-friendly LQG controller AHP method Simulink/SRO |
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