空气舵绕轴转动动力学响应分析  

Dynamic Response Analysis of Air Rudder Rotating Around an Axis

作　　者：隋鑫 马之馨 刘博[1] 马志赛 王晓宇[1] SUI Xin;MA Zhixin;LIU Bo;MA Zhisai;WANG Xiaoyu(China Academy of Launch Vehicle Technology,Beijing,100076;Tianjin University,Tianjin,300350)

机构地区：[1]中国运载火箭技术研究院,北京100076 [2]天津大学,天津300350

出　　处：《导弹与航天运载技术（中英文）》2024年第4期25-28,33,共5页Missiles and Space Vehicles

基　　金：国家自然科学基金(No.12272258)。

摘　　要：针对空气舵绕舵轴转动动力学模型,考虑含转动间隙、Stribeck效应的干摩擦模型,建立含间隙、干摩擦空气舵转动受迫振动方程,应用平均法解析分析转动方向幅频特性,研究不同摩擦力矩系数及外激励频率对绕轴振动幅频响应的影响。结果表明:外激励频率变化时,绕轴振动幅频曲线呈现软硬不同的迟滞非线性特性,频域出现多解频带,且频域多解频带随摩擦力矩系数的增大而增大。This article focuses on the dynamic model of air rudder rotation around the rudder shaft,considering a dry friction model with rotational clearance and Stribeck effect,and establishing the forced vibration equation of air rudder rotation with clearance and dry friction.The average method is applied to analyze the amplitude frequency characteristics of the rotational direction.The influence of different friction torque coefficients and external excitation frequencies on the amplitude frequency response of axial vibration is studied.The results show that when the external excitation frequency changes,the amplitude frequency curve of the vibration around the axis exhibits hysteresis nonlinear characteristics of different softness and hardness.Multiple solution frequency bands appear in the frequency domain,and the frequency domain multiple solution frequency bands increase with the increase of the friction torque coefficient.

关 键 词：空气舵 非线性 摩擦力矩 迟滞 间隙 

分 类 号：V215[航空宇航科学与技术—航空宇航推进理论与工程]