磁流变阻尼器动力学模型参数识别
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摘要
针对磁流变阻尼器动力学模型中的未知参数,采用阻尼最小二乘法进行参数识别。推导了剪切阀式磁流变阻尼器的数学模型并进行动力特性仿真,通过仿真结果分析,提出磁流变阻尼器非线性Bingham参数模型,利用阻尼最小二乘法识别出非线性Bingham模型的参数,得到磁流变阻尼器动力模型。通过动力模型仿真验证,结果表明非线性模型可以准确的描述磁流变阻尼器的动力特性,说明阻尼最小二乘法能有效的识别非线性参数模型,为磁流变阻尼器在汽车碰撞缓冲吸能应用方面奠定了基础。
In view of the unknown parameters of the dynamic model of magnetorheological damper,the damping least square method is used to identify. The mathematical model of the shear valve type magnetorheological damper is derived and the dynamic characteristics are simulated. Based on the simulation results, the nonlinear Bingham parameter model of magnetorheological damper is proposed,and the parameters of the nonlinear Bingham model are identified by using the damped least square method,and the dynamic model of the magnetorheological damper is obtained.Through the simulation of the dynamic model,the results show that the nonlinear parameter model can accurately describe the dynamic characteristics of magnetorheological damper,and the damping least square method can effectively identify the nonlinear parameters model.The present work laid the foundation for the application of magnetorheological damper in automobile collision buffer energy absorption.
In view of the unknown parameters of the dynamic model of magnetorheological damper,the damping least square method is used to identify. The mathematical model of the shear valve type magnetorheological damper is derived and the dynamic characteristics are simulated. Based on the simulation results, the nonlinear Bingham parameter model of magnetorheological damper is proposed,and the parameters of the nonlinear Bingham model are identified by using the damped least square method,and the dynamic model of the magnetorheological damper is obtained.Through the simulation of the dynamic model,the results show that the nonlinear parameter model can accurately describe the dynamic characteristics of magnetorheological damper,and the damping least square method can effectively identify the nonlinear parameters model.The present work laid the foundation for the application of magnetorheological damper in automobile collision buffer energy absorption.
引文
[1]Peter J.Schuster.Current trends in bumper design for pedestrian impact[R].SAE Paper,2006,464(1):1-16.
[2]魏铁华,杨晓红.电流变技术与磁流变技术[J].水利电力机械,2002,24(2):57-60.(Wei Tie-hua,Yang Xiao-hong.Electrorheological technology and magnetorheological technology[J].Water Conservancy Electric Power Machinery,2002,24(2):57-60)
[3]Alan L.Browne,Joseph D.Mccleary,Chandra S.Namuduri.Impact performance of magnetorheological fluids[J].Journal of Intelligent Material Systems and Structures,2009,11(20):723-728.
[4]David Woo,Seung B.Choi,Young Tae Choi.Frontal crash mitigation using MR impact damper for controllable bumper[J].Journal of Intelligent Material Systems and Structures,2007,18(12):1211-1215.
[5]董小闵,丁飞耀,陈孝荣.基于磁流变缓冲器的汽车碰撞仿真[J].计算机仿真,2013,30(12):136-139.(Dong Xiao-min,Ding Fei-yao,Chen Xiao-rong.Research on vehicle crash simulation based on magnetorheological absorber[J].Computer Simulation,2013,30(12):136-139.)
[6]朱伟,马履中,谢俊.磁流变阻尼器设计及实时控制研究[J].机械设计与制造,2007(11):138-140.(Zhu Wei,Ma Lv-zhong,Xie Jun.Design of MR damper and study on its real time control[J].Machinery Design Manufacture,2007(11):138-140.)
[7]张进秋,陆念力,王光远.剪切阀式磁流变阻尼器动态特性实验研究[J].工程力学,2005,22(3):11-15.(Zhang Jin-qiu,Lu Nian-li,Wang Guang-yuan.Experimental study of the dynamic characteristics of shear-valve mode MRF damper[J].Engineering Mechanics,2005,22(3):11-15.)
[8]刘中良.磁流变阻尼器动力学模型的建立和数值模拟研究[D].长沙:中南大学,2012:31-39.(Liu Zhong-liang.Research on establishing new MRD dynamic model and numerical analysis[D].Changsha:Central South University,2012:31-39.)
[9]刘建军,陈明锋,叶子飘.阻尼最小二乘法与模拟退火发结合实现非线性模型参数的估计[J].井冈山大学学报:自然科学版,2010,31(6):10-14.(Liu Jian-jun,Chen Ming-feng,Ye Zi-piao.The estimation of the nonlinear model parameter based on combination of damped least-squares method and simulated annealing method[J].Journal of Jinggangshan University:Natural Science,2010,31(6):10-14.)
[10]刘金琨.系统辨识理论及MATLAB仿真[M].北京:电子工业出版社,2013:30-49.(Liu Jin-kun.System Identification Theory and MATLAB Simulation[M].Beijing:Publishing House of Electronics Industry,2013:30-49.)
[2]魏铁华,杨晓红.电流变技术与磁流变技术[J].水利电力机械,2002,24(2):57-60.(Wei Tie-hua,Yang Xiao-hong.Electrorheological technology and magnetorheological technology[J].Water Conservancy Electric Power Machinery,2002,24(2):57-60)
[3]Alan L.Browne,Joseph D.Mccleary,Chandra S.Namuduri.Impact performance of magnetorheological fluids[J].Journal of Intelligent Material Systems and Structures,2009,11(20):723-728.
[4]David Woo,Seung B.Choi,Young Tae Choi.Frontal crash mitigation using MR impact damper for controllable bumper[J].Journal of Intelligent Material Systems and Structures,2007,18(12):1211-1215.
[5]董小闵,丁飞耀,陈孝荣.基于磁流变缓冲器的汽车碰撞仿真[J].计算机仿真,2013,30(12):136-139.(Dong Xiao-min,Ding Fei-yao,Chen Xiao-rong.Research on vehicle crash simulation based on magnetorheological absorber[J].Computer Simulation,2013,30(12):136-139.)
[6]朱伟,马履中,谢俊.磁流变阻尼器设计及实时控制研究[J].机械设计与制造,2007(11):138-140.(Zhu Wei,Ma Lv-zhong,Xie Jun.Design of MR damper and study on its real time control[J].Machinery Design Manufacture,2007(11):138-140.)
[7]张进秋,陆念力,王光远.剪切阀式磁流变阻尼器动态特性实验研究[J].工程力学,2005,22(3):11-15.(Zhang Jin-qiu,Lu Nian-li,Wang Guang-yuan.Experimental study of the dynamic characteristics of shear-valve mode MRF damper[J].Engineering Mechanics,2005,22(3):11-15.)
[8]刘中良.磁流变阻尼器动力学模型的建立和数值模拟研究[D].长沙:中南大学,2012:31-39.(Liu Zhong-liang.Research on establishing new MRD dynamic model and numerical analysis[D].Changsha:Central South University,2012:31-39.)
[9]刘建军,陈明锋,叶子飘.阻尼最小二乘法与模拟退火发结合实现非线性模型参数的估计[J].井冈山大学学报:自然科学版,2010,31(6):10-14.(Liu Jian-jun,Chen Ming-feng,Ye Zi-piao.The estimation of the nonlinear model parameter based on combination of damped least-squares method and simulated annealing method[J].Journal of Jinggangshan University:Natural Science,2010,31(6):10-14.)
[10]刘金琨.系统辨识理论及MATLAB仿真[M].北京:电子工业出版社,2013:30-49.(Liu Jin-kun.System Identification Theory and MATLAB Simulation[M].Beijing:Publishing House of Electronics Industry,2013:30-49.)