| 彭闪闪,尹宗军,叶良龙,李梦楠.基于LQG控制的整车8-DOF系统振动分析[J].井冈山大学自然版,2019,40(6):63-70 |
| 基于LQG控制的整车8-DOF系统振动分析 |
| VIBRATION ANALYSIS OF FULL VEHICLE 8-DOF SYSTEM BASED ON LQG CONTROL |
| 投稿时间：2019-04-15 修订日期：2019-05-20 |
| DOI：10.3969/j.issn.1674-8085.2019.06.012 |
| 中文关键词: 8-DOF系统 滤波白噪声法 最优控制 |
| 英文关键词: 8-DOF system filtered white noise method optimal control vibration analysis |
| 基金项目:安徽省教育厅自然科学重点项目（KJ2018A0633）；安徽省教育厅教学研究项目（2017jyxm0948） |
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| 中文摘要: |
| 建立了整车8-DOF系统动力学模型，考虑了主动悬架控制，并增设了主动座椅控制，设计了车辆主动悬架系统的LQG控制器。基于Matlab仿真平台建立了整车8-DOF系统动力学仿真模型，对所得最优控制策略下的动态响应进行了仿真验证。仿真结果表明：为了改善人椅系统质心及车身质心的跳振性能需要在一定程度上弱化各轮轮胎动位移性能。从控制效能上来看，该最优控制器能够满足各行驶状态下对悬架性能的要求，改善了车辆的行驶平顺性。 |
| 英文摘要: |
| Based on active suspension control, the addition of active seat control is taken into account to the full vehicle 8-DOF system. the LQG controller of automobile active suspension is designed. Based on the Matlab simulation platform, dynamic response of the optimal control strategy is simulated and verified in terms of the dynamic model of person-chair system. Simulation results show that the jumping performance of the center of mass and the center of mass of the human chair system is improved by reducing the dynamic displacement performance of each wheel. From the point of view of control efficiency, the optimal controller can satisfy the requirements of suspension performance under various driving conditions, and promote the ride comfort of the vehicle. |
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