火炮磁流变阻尼器试验分析与动态模型

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (1) : 64-67.

论文

火炮磁流变阻尼器试验分析与动态模型

李赵春1，2 ; 王炅1

作者信息 +

Experimental analysis and dynamic model of a gun magneto-rheological damper

LI Zhao-chun1,2; WANG Jiong1

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文章历史 +

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。

Abstract

As the gun magneto-rheological damper works in the conditions of high impulsive loading, its dynamic characteristic and mechanical model are different from the common MR damper. A MR damper used for recoil system is designed according to a type of gun. The dynamic tests under 5 kind of current are carried out which verifies the feasibility of the MR damper to control the recoil motion. The experimental analysis results show that the output force of the MR damper is not only related with the applied current and recoil velocity but also with the inertia force, gas pressure in the cylinder, and the complexity of MR effect when subjected to impact loading. An improved polynomial model, which is of simple form, easy to solve the inverse model and suitable for real time control, is presented in this paper. After parameter identification, the polynomial model can well describe the relationship of recoil velocity and output force during recoil motion.

导出引用

李赵春;; 王炅 . 火炮磁流变阻尼器试验分析与动态模型[J]. 振动与冲击, 2012, 31(1): 64-67

LI Zhao-chun; WANG Jiong . Experimental analysis and dynamic model of a gun magneto-rheological damper[J]. Journal of Vibration and Shock, 2012, 31(1): 64-67