火炮磁流变阻尼器试验分析与动态模型
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摘要
火炮磁流变阻尼器工作在高速高冲击条件下,其动力特性及其力学模型与常用的磁流变阻尼器存在较大不同。针对某型号火炮设计了反后坐用磁流变阻尼器,并进行了5种不同电流下的动态测试,验证了该阻尼器对反后坐控制的可行性。由试验分析得,火炮磁流变阻尼器的输出力不仅与控制电流和后坐速度有关,还与高冲击条件下的磁流变效应的复杂性、惯性力、腔体内气体压力等因素有关。提出了用改进的多项式模型描述火炮磁流变阻尼器,该模型具有形式简洁,易于求解逆模型,便于实时控制等优点。通过参数辨识后的模型能较好的描述火炮反后坐过程中阻尼器的输出力。
As a magneto-rheological(MR) damper for gun recoil system works under the condition of high impulsive loading,its dynamic characteristic and mechanical model are different from those of a common MR damper.A MR damper used for the recoil system of a type of gun was designed.The dynamic tests with 5 kinds of current were conducted which verified the feasibility of the MR damper for controlling recoil motion.The experimental analysis results showed that the output force of the MR damper is not only related with the applied current and the recoil velocity but also with the inertia force,the gas pressure in the cylinder,and the complexity of the MR effect under impact loading.An improved polynomial model with a simple form,easy to solve its inverse model and suitable for real time control was proposed here.After parametric identification,the polynomial model could describe the relationship of the recoil velocity and the output force of the MR damper in anti-recoil process.
As a magneto-rheological(MR) damper for gun recoil system works under the condition of high impulsive loading,its dynamic characteristic and mechanical model are different from those of a common MR damper.A MR damper used for the recoil system of a type of gun was designed.The dynamic tests with 5 kinds of current were conducted which verified the feasibility of the MR damper for controlling recoil motion.The experimental analysis results showed that the output force of the MR damper is not only related with the applied current and the recoil velocity but also with the inertia force,the gas pressure in the cylinder,and the complexity of the MR effect under impact loading.An improved polynomial model with a simple form,easy to solve its inverse model and suitable for real time control was proposed here.After parametric identification,the polynomial model could describe the relationship of the recoil velocity and the output force of the MR damper in anti-recoil process.
引文
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[3]王修勇,孙洪鑫,陈政清.旋转剪切式磁流变液阻尼器设计及力学模型[J].振动与冲击,2010,29(10):77-81.
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[12]Choi S B,Lee S K,Park Y P.A hysteresis model for the field-dependent damping force of a magnetorheological damper[J].Journal of Sound and Vibration,2001:375-383.
[2]夏永强,余淼,刘胜龙.磁流变弹性体隔振缓冲器设计及实验研究[J].振动与冲击,2010,29(9):196-200.
[3]王修勇,孙洪鑫,陈政清.旋转剪切式磁流变液阻尼器设计及力学模型[J].振动与冲击,2010,29(10):77-81.
[4]Ahmadian M,Norris J A.Experimental analysis ofmagnetorheological dampers when subjected to impact andshock loading[J].Communication in Nonlinear Science andNumerical Simulation,2008,13:1978-1985.
[5]胡红生,王炅,蒋学争,等.火炮磁流变后坐阻尼器的设计与可控性分析[J].振动与冲击,2010,29(2):184-188.
[6]王炅,胡红生.一种磁流变减振器冲击试验台架及冲击试验装置[P].中国专利:200820157119.X,2009-11-04.
[7]Stanway R,Spost on J L,Stevens N G.Non-linear modelingof an electrorheological vibration on damper[J].J Electrostatics,1987,20:167-184.
[8]周强,瞿伟廉.磁流变阻尼器的两种力学模型和试验验证[J].地震工程与工程振动,2002,22(4):144-150.
[9]高树滋,陈运生,张月林.火炮反后坐装置设计[M].北京:兵器工业出版社,1995.
[10]李延成.冲击载荷下磁流变减振器半主动控制研究[D].南京:南京理工大学,2007.
[11]张莉洁,王炅,钱林方.冲击载荷下磁流变阻尼器动态特性分析及模型参数辨识[J].机械工程学报,2009,45(1),211-217.
[12]Choi S B,Lee S K,Park Y P.A hysteresis model for the field-dependent damping force of a magnetorheological damper[J].Journal of Sound and Vibration,2001:375-383.
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