火炮反后坐多级独立式磁流变缓冲器可控性分析
Controllability Analysis of a Novel Multi-coil Magnetorheological Absorber for Gun Recoil Mitigation
查看参考文献16篇
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文摘
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针对火炮反后坐缓冲应用场合,设计了多级可独立加载电流式磁流变缓冲器。依据45°射角下理想后坐阻力变化,分析该缓冲器在3种不同工作模式,即统一加载、组合控制及开环级联下的动态响应特性。冲击实验结果表明:在非可控区域内,单出杆式磁流变缓冲器动态过程存在气体压缩阶段,导致后坐阻力与速度存在明显的滞后现象;而在可控区域内,以2A总电流输入为前提,组合线圈(线圈级数大于或等于2)工作模式下所产生的最大库伦阻尼力显著优于等值加载情况;开环级联控制模式能有效地降低后坐峰值阻力和延后其出现时刻,逼近理想缓冲效果,同时也对缓冲器最大有效行程提出了更高的要求。通过分析比较得出,基于时间和空间二维电流加载次序,该缓冲器可实现灵活多变阻尼特性输出,在较大射角的火炮反后坐缓冲系统中具有一定的可控性。 |
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其他语种文摘
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A novel multi-coil magnetorheological (MR) absorber, which has the capability of being applied with input currents individually, is proposed for the impact mitigation of a gun. The dynamic response characteristics of the proposed MR absorber working in three different modes, namely, uniform loading, combined control and open-loop cascade, are discussed according to ideal profile of recoil resis-tance at 45-degree angle. Impact experimental results show that, in the non-controllable region, a gas compression stage exists in single-stroke damping process, resulting in a significant hysteresis between the damping force and recoil speed; in the controllable region, given a total 2A input current, the maximum Coulomb damping force generated by the mode of combined control of more than two working coils behaves better than that generated by equivalent loading; and the mode of open-loop cascade control can effectively reduce the peak force and delay its occurrence moment for approaching the ideal buffer effect. However, this requires additional effective stroke for the recoil buffer. It can be seen through analysis that the MR absorber can be used to achieve flexible and variable damping output based on the temporal and spatial two-dimensional current loading sequence, which shows a certain controllability in the application of gun recoil systems with large firing angles. |
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来源
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兵工学报
,2019,40(4):708-717 【核心库】
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DOI
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10.3969/j.issn.1000-1093.2019.04.005
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关键词
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火炮反后坐
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磁流变缓冲器
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冲击载荷
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可控特性
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动态响应
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地址
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1.
浙江师范大学工学院, 浙江, 金华, 321004
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南京理工大学机械工程学院, 江苏, 南京, 210094
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嘉兴学院机械工程学院, 浙江, 嘉兴, 314001
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-1093 |
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学科
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武器工业 |
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基金
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国家自然科学基金项目
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文献收藏号
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CSCD:6483508
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参考文献 共
16
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