Controllability Analysis of a Novel Multi-coil Magnetorheological Absorber for Gun Recoil Mitigation

doi:10.3969/j.issn.1000-1093.2019.04.005

Abstract

Abstract: 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 2 A 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. Key

Key words: gunrecoilsystem, magnetorheologicalabsorber, impactloading, controllability, dynamicresponse

CLC Number:

TJ303⁺.4

ZHENG Jiajia, KAN Junwu, ZHANG Guang, WANG Jiong, OUYANG Qing. Controllability Analysis of a Novel Multi-coil Magnetorheological Absorber for Gun Recoil Mitigation[J]. Acta Armamentarii, 2019, 40(4): 708-717.

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第40卷
第4期2019 年4月兵工学报ACTA
ARMAMENTARIIVol.40No.4Apr.2019

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