CAJ | 학술논문

针对磁流变阻尼器用于火炮后坐缓冲时对响应时间的严苛要求，对磁流变冲击后坐控制系统进行冲击试验研究。对设计的磁流变阻尼器进行固定电流下冲击特性试验，获得输出阻力模型。对阻尼器线圈电流及输出阻力响应时间分别进行试验测试，提出磁流变冲击后坐轨迹跟踪控制系统方案，期望可控阻力能准确跟踪理想阻力曲线。通过用固定曲线无反馈控制及双闭环反馈控制对磁流变后坐控制系统进行3 g、4 g 药量冲击试验结果比较知，采用反馈控制能显著减小磁流变后坐阻力响应时间，获得快速跟踪性能，后坐阻力充满度更好。后坐位移相同时可减小后坐阻力峰值；后坐阻力峰值相同时可显著减小后坐位移。由4g 药量中后坐阻力曲线下滑结果分析知，阻尼力可调系数作为重要特性参数在进行磁流变阻尼器结构设计时必须足够大。
침대자류변조니기용우화포후좌완충시대향응시간적엄가요구，대자류변충격후좌공제계통진행충격시험연구。대설계적자류변조니기진행고정전류하충격특성시험，획득수출조력모형。대조니기선권전류급수출조력향응시간분별진행시험측시，제출자류변충격후좌궤적근종공제계통방안，기망가공조력능준학근종이상조력곡선。통과용고정곡선무반궤공제급쌍폐배반궤공제대자류변후좌공제계통진행3 g、4 g 약량충격시험결과비교지，채용반궤공제능현저감소자류변후좌조력향응시간，획득쾌속근종성능，후좌조력충만도경호。후좌위이상동시가감소후좌조력봉치；후좌조력봉치상동시가현저감소후좌위이。유4g 약량중후좌조력곡선하활결과분석지，조니력가조계수작위중요특성삼수재진행자류변조니기결구설계시필수족구대。
Since the critical demand for time response of MR damper in gun recoil buffering applications, experimental studies on MR recoil control system were carried out on an impact test rig with the special designed MR damper.The impact performance of the MR damper described by a physical model under fixed operating current was obtained.The time responses of the MR damper's coil current and the damping force were respectively tested,then a trajectory tracking control scheme for MR recoil system was put forward,so that the adjustable damping force of MR can accurately track an ideal reference curve.Experimental results with 3g and 4g powders under the double close-looped feedback control as well as the fixed damping curve control without feedback were obtained.By comparisons,it is shown that the feedback control can efficiently reduce the response time of the damping force and provide more rapid tracking ability.With the same displacement,smaller peak of recoil force is produced,while with the same peak of recoil force, more less displacement is achieved.Analyzing the decline of the damping force curve with 4g powders,it’s suggested the adjustable coefficient of the damping force,as an important parameter,must be large enough in MR dampers’structural design.