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基于H_∞控制的主动非线性座椅悬架系统
A Novel Active Non-linear Seat Suspension System Based on H_∞ Control
【Author】 Tu Lixin;Huang Hua;Liu Shaowei;Wang Mengyao;Liu Guangyuan;Beijing Institute of Technology;Chongqing Tiema Transmission Co.,Ltd.;
【机构】 北京理工大学; 重庆铁马变速箱有限公司;
【摘要】 重型车辆驾驶员经常会面临剧烈的全身振动问题,长此以往会危害驾驶员的职业健康。为抑制全身振动效应,本文以重型车辆的座椅悬架系统为研究对象,设计并测试了一种负刚度弹簧机构。该机构可以安装进座椅悬架中与原螺旋弹簧并联,形成新的非线性刚度系统。此外,本文还设计了状态反馈H_∞控制器来使该非线性系统满足特定性能指标。最后,通过4种随机路面激励(依据ISO 8608生成)评估非线性系统的动力学响应过程。结果表明,所设计的主动非线性座椅悬架系统可将被动座椅悬架的减振性能提升至90%。
【Abstract】 Many heavy vehicle drivers have been undertaken the tremendous whole-body-vibration effect.To suppress this effect,this paper designs and tests a negative stiffness spring which can be installed on the traditional seat suspension to form a nonlinear system.Such a system can achieve desired vibration control performance based on a state feedback H_∞ controller.Finally,different random profiles are generated according to the ISO 8608 and use to evaluate the dynamic responses.The results illustrate that the proposed active non-linear seat system can improve up to 90% vibration reduction compared with the traditional seat suspension.
- 【会议录名称】 2019中国汽车工程学会年会论文集(4)
- 【会议名称】2019中国汽车工程学会年会
- 【会议时间】2019-10-22
- 【会议地点】中国上海
- 【分类号】U463.836
- 【主办单位】中国汽车工程学会(China Society of Automotive Engineers)